Allegiant Airlines Seat Selection: Fees, Seat Maps & How to Choose

Passengers flying on Allegiant Air are not required to pay for an advance seat selection. Allegiant operates an unbundled, à la carte service model where seat reservations are entirely optional. If you choose not to pay to reserve a specific seat, Allegiant will automatically assign you a seat during check-in at no additional seat-selection charge.

Travelers who want control over where they sit—such as securing an aisle or window, guaranteeing that family members or travel companions sit together, or reserving extra legroom—can purchase a seat assignment either during booking or through Manage Travel prior to departure. According to Allegiant’s published optional services and fees schedule, seat-selection fees range from $0.00 to $80.00 per passenger, per flight segment, depending on the route, aircraft type, and seat category.

Editorial Disclosure: FareWander is an independent travel information and comparison resource. FareWander is not affiliated with, authorized by, or an agent of Allegiant Air. We do not manage reservations, issue seat assignments, or process ticket refunds. Seat availability and prices are set directly by Allegiant and should be confirmed on the official seat map during booking or inside Manage Travel.

Allegiant Seat Selection at a Glance

How Does Allegiant Seat Assignment Work?

Allegiant Airlines uses an assigned seating system on all flights; it does not operate an open-seating model. Every passenger receives a designated row and seat letter printed on their boarding pass.

The seating process works in one of two ways:

• Advance Paid Selection: Passengers who prefer a specific cabin location can view the live seat map during initial flight reservation or post-ticketing in Manage Travel. You choose an open seat and pay the applicable fee displayed for that segment.
• Airline-Assigned Seating at Check-In: Passengers who bypass advance seat selection are assigned a seat by Allegiant’s reservation system during check-in, which opens 24 hours prior to scheduled departure. There is no fee for this system-assigned seat.

Because automated assignments pull solely from the seats that remain unselected when check-in opens, parties traveling together on the same confirmation code may be separated across different rows or placed in middle seats.

How Much Does Allegiant Seat Selection Cost?

Allegiant’s official fee schedule establishes that advance seat selection costs between $0.00 and $80.00 per passenger, per flight segment.

Pricing is dynamic and determined by several routing and operational factors:

• Seat Location: Standard seats, forward cabin rows, and window or aisle preferences reflect different fee tiers.
• Legroom Upgrades: Allegiant Extra and emergency exit-row seats sit at higher price points.
• Itinerary & Demand: Pricing varies across different route corridors, peak travel seasons, and remaining seat inventory on the flight.

Allegiant does not utilize a single, flat fee across all routes. Because prices adjust dynamically, travelers should inspect the real-time seat map inside their itinerary to review the exact price applied to their specific reservation before purchasing.

Understanding Fees: Per Person, Per Segment

Allegiant assesses seat-selection fees on a per person, per segment basis:

• A segment is defined as one takeoff and one landing.
• A direct, non-stop round-trip ticket consists of two flight segments (outbound and return).
• If you select a seat for both directions, you will pay a separate seat fee for the outbound flight and a separate seat fee for the return flight.
• The fee for the outbound flight may differ from the return flight based on demand and cabin layout for that specific departure.

Example: If a passenger selects an advance seat priced at $18 on the outbound leg and $24 on the return leg, the total seat selection cost for the itinerary is $42. If two passengers travel together on that same round trip and both select seats in both directions, four separate seat-selection fees are charged.

How to Select or Change an Allegiant Seat

How to Select an Allegiant Seat When Booking

Reserving a seat during your initial reservation is straightforward:

1. Search for your route and travel dates on Allegiant’s website or mobile app.
2. Select your base fare or bundle tier, and input all required passenger details.
3. Continue through checkout until the interactive aircraft seat map loads.
4. Click on an available seat for each passenger on each flight segment.
5. Review the individual and total seat fees displayed on screen.
6. Complete ticket payment.
7. Verify that your row and seat assignment appear on your booking confirmation summary.

If you prefer not to pay a fee, you can choose to skip the seat map screen without selecting a seat.

How to Choose or Change an Allegiant Seat After Booking

If you skip seat selection during initial booking, you can add or modify seat assignments later using Allegiant’s self-service portals:

1. Visit Allegiant’s homepage and click Manage Travel, or open the Allegiant mobile app.
2. Retrieve your itinerary by entering the passenger’s last name and the 6-character alphanumeric confirmation code.
3. Select the seat modification option to view the live aircraft layout.
4. Click on any remaining available seat.
5. Review the applicable seat fee or fare difference.
6. Confirm payment to save your updated assignment.

For additional self-service reservation options, review our dedicated guide to the Allegiant Manage Travel portal.

Check-In Assignments, Boarding Pass Lockout & "Seat Not Assigned"

When Can You No Longer Change Your Allegiant Seat?

Under Allegiant’s official policy, seat assignments cannot be changed at the airport or once a boarding pass has been printed or downloaded.

This is a critical operational rule:

• Seat changes are not permitted up to the boarding gate.
• Generating a digital boarding pass in the mobile app or printing a paper boarding pass locks your seat assignment in Allegiant’s reservation system.
• Once your boarding pass is issued, airport customer service agents and gate representatives cannot process voluntary seat changes or upgrades.

If you are evaluating a seat change or legroom upgrade, finalize the change online or in the app before you view, download, or print your boarding pass.

Can You Choose a Seat During Allegiant Check-In?

Yes, with specific limitations.

Allegiant’s digital check-in window opens 24 hours prior to scheduled departure and closes strictly 45 minutes before departure.

When you access the Allegiant online check-in process:

• The system displays your complimentary, airline-assigned seat.
• If you do not want the assigned seat, you can open the available seat map and purchase an unreserved standard, Legroom+, or Allegiant Extra seat by paying the displayed fee.
• All seat adjustments must be completed on this screen before you finalize check-in and generate your boarding pass.

What Does "Seat Not Assigned" Mean on Allegiant?

Seeing "Seat Not Assigned" on your flight confirmation or itinerary summary simply means you did not purchase an advance seat assignment.

It does not indicate an issue with your ticket:

• Your booking is fully confirmed.
• The flight is not automatically oversold.
• Your specific seat number will be generated automatically when you complete check-in between 24 hours and 45 minutes prior to departure.

Family Seating & Child Rules on Allegiant

Will Allegiant Seat Families Together?

Allegiant’s official customer guidance states that the airline makes operational efforts to seat families traveling with young children together, but adjacent seating cannot be guaranteed unless seats are reserved in advance.

Because Allegiant relies on à la carte seat selection, many passengers purchase their seats weeks or months ahead of departure. On heavily booked flights, the automated check-in algorithm can only draw from the remaining scattered inventory, which frequently consists of single middle seats across multiple rows.

To guarantee that children sit directly next to an adult companion, families should purchase advance seat assignments during booking or via Manage Travel. Relying on onboard seat swaps can cause boarding delays and is subject entirely to the discretion of fellow travelers and flight crew safety requirements.

Allegiant Seat Selection for Children

When traveling with children on Allegiant, specific age guidelines apply:

• Supervision Requirement: Children aged 14 and younger must travel with an accompanying adult who is at least 15 years old.
• Exit Row Safety Rules: Under FAA regulations, no passenger under 15 years of age may occupy an emergency exit-row seat.
• Child Restraint Systems (Car Seats): FAA-approved car seats may be used on board if a separate ticketed seat has been purchased for the infant or child. Car seats must typically be placed in a window seat so they do not block cabin egress for other travelers in the row.

Allegiant Seat Options & Extra-Legroom Tiers

Allegiant’s cabin layout features an all-economy cabin divided into several seating tiers across its Airbus A319, A320, and Boeing 737-8-200 fleet:

Standard Seats

Standard seats make up the primary cabin inventory across Allegiant’s Airbus A319, A320, and Boeing 737 aircraft. These seats feature standard pitch and contouring, providing a functional option for budget-focused travelers who want to ensure a specific window or aisle location. Standard seats carry the lowest advance seat-selection fees.

Legroom+ Seats

On select aircraft, Allegiant designates select forward-cabin rows as Legroom+ seating. These rows offer additional inches of seat pitch compared to standard rows, allowing taller passengers easier movement and faster deplaning upon arrival. Pricing sits in the mid-to-higher fee range.

Allegiant Extra

Allegiant Extra is a premium seating option available on select flights and aircraft. It includes:

• 7 inches of additional legroom
• Priority check-in and priority boarding
• Dedicated overhead bin space
• A complimentary onboard beverage service

Allegiant Extra is not a separate first-class or business-class cabin; it is an upgraded economy seating zone. Live availability and pricing depend on the specific aircraft assigned to your route.

Upcoming Product Note — Allegiant First (Spring 2027): Allegiant has announced plans for a new premium cabin product designated as Allegiant First, scheduled for phased deployment beginning in spring 2027 on select aircraft. Allegiant First is not currently available for general 2026 operations and should not be confused with the existing Allegiant Extra product.

Allegiant Exit Row Seat Requirements

Exit rows offer substantial legroom but carry strict legal and operational eligibility rules. Federal Aviation Administration (FAA) regulations and Allegiant safety guidelines mandate that every exit-row occupant meet strict physical and operational requirements.

To sit in an exit row, a passenger must:

• Be at least 15 years of age at the time of travel.
• Possess sufficient mobility, strength, and dexterity in both arms, hands, and legs to lift, maneuver, and operate the emergency exit hatch door (which can weigh up to 45 pounds).
• Be able to read, speak, and understand verbal commands and printed emergency instructions in English.
• Have sufficient visual and aural capacity to assess emergency conditions outside the aircraft and hear crew instructions.
• Not be traveling with an infant, a child under 15, a pet in the cabin, or a service animal.
• Not require the use of a seatbelt extender, as the extra strap can create an obstacle during an emergency evacuation.
• Not require specialized medical equipment, such as an active Portable Oxygen Concentrator (POC).

Flight attendants are legally required to assess all exit-row passengers prior to takeoff. If a passenger does not meet all criteria, crew members will reassign them to a standard row without a refund of the seat upgrade fee.

Accessibility, Passengers of Size & Medical Devices

Allegiant Seat Selection for Passengers With Disabilities

Allegiant accommodates passengers with disabilities in accordance with Title 14 CFR Part 382 and the Air Carrier Access Act (ACAA):

• Accessible Seating: Allegiant provides designated accessible seating—such as aisle seats with movable armrests—for qualified passengers with mobility limitations.
• Special Service Requests (SSR): Travelers needing seating accommodations should submit an SSR during booking or contact Allegiant Customer Care well before travel.
• Fee Reimbursements: If a passenger pays for an advance seat selection and Allegiant subsequently reassigns that seat to accommodate an individual with a disability under federal rules, the passenger who was moved is entitled to a reimbursement of their paid seat-selection fee.
• No Universal Free Upgrade: Federal accessibility rules ensure necessary accommodations, but they do not entitle passengers to complimentary upgrades to premium products (like Allegiant Extra) if standard accessible seating meets their medical needs.

Does Allegiant Require an Extra Seat for Passengers of Size?

Allegiant’s official seating policy requires that all passengers be able to sit comfortably with the armrests fully lowered on both sides:

• Standard Allegiant aircraft seats measure 17.8 inches from the inside of one armrest to the inside of the opposite armrest.
• Passengers who cannot lower both armrests or who encroach upon the seating space of an adjacent traveler must purchase an additional seat during the initial reservation.
• Allegiant pre-assigns the two adjacent seats side-by-side at the time of reservation to ensure travelers have contiguous space.

Medical Devices and Portable Oxygen Concentrators (POC)

Travelers using medical devices during flight must adhere to specific seating rules:

• POC In-Flight Use: Any passenger actively operating an FAA-approved Portable Oxygen Concentrator during flight must occupy a window seat. This prevents the oxygen delivery tubing from crossing other passengers' exit paths in an emergency. The only exception is when all other seats in that specific row are unoccupied.
• Row Restrictions: Passengers using medical devices are strictly prohibited from occupying emergency exit rows or bulkhead rows.
• Transported vs. In-Use: These seating restrictions apply only when the device is operated in flight. Devices that are merely stowed as cabin baggage under federal assistive device allowances do not restrict seat choice (review assistive device rules in our Allegiant baggage guide).

Changing, Upgrading & Refunding Allegiant Seats

Can You Change or Upgrade Your Allegiant Seat?

Yes, provided you meet the timing restrictions and alternative seats are available:

• Where to Change: Log into Manage Travel or use the Allegiant app.
• Timing: You must make any seat changes before you print or download your boarding pass.
• Cost & Upgrades: Passengers holding standard seat assignments can upgrade to Legroom+, exit rows, or Allegiant Extra at any time prior to boarding pass issuance. When upgrading, you pay the applicable price difference between your original purchase and the upgraded tier. If you switch between seats in the same price tier, you generally pay no fee difference.

Are Allegiant Seat Selection Fees Refundable?

Under Allegiant’s standard Terms & Conditions and Contract of Carriage, optional seat-selection fees are generally non-refundable. However, specific legal and operational exceptions apply:

• Voluntary Seat Change: If you voluntarily switch from a higher-priced seat to a lower-priced seat, the difference is forfeited and not refunded.
• Voluntary Flight Cancellation (Standard): If you cancel your flight outside the 24-hour statutory window, pre-paid seat selection fees are non-refundable and are not included in travel vouchers.
• 24-Hour Cancellation Exception: If you cancel an entire qualifying air-only itinerary within 24 hours of booking, and the flight was scheduled at least 168 hours (7 days) away at the time of purchase, all ancillary charges—including seat fees—are refunded 100% to the original payment method. Review full details in our Allegiant cancellation and refund policy.
• Airline-Initiated Flight Cancellation: If Allegiant cancels your flight or implements a major schedule disruption (monitor updates via flight operational status) and you decline alternate transportation, all unused seat-selection fees must be fully refunded to your original payment method under U.S. DOT rules.
• Disability Accommodation Reassignment: If Allegiant reassigns your pre-purchased seat to accommodate an individual with a disability under Title 14 CFR Part 382, carrier terms provide for a reimbursement of the paid seat fee.

How to Read the Allegiant Seat Map & Practical Tips

How to Read the Allegiant Seat Map

When opening the seat selector on Allegiant’s website or mobile app, the interactive seat map provides real-time cabin information:

• Available Seats: Unoccupied seats that are eligible for selection. Clicking an available seat highlights the exact fee assessed for that spot.
• Occupied / Unavailable Seats: Marked with an "X" or shaded out. These seats have already been purchased by other passengers, blocked for operational balance, or held for regulatory accommodations.
• Seat Tiers: Distinct icons or outlines differentiate standard seats, Legroom+ seating, exit rows, and Allegiant Extra rows.
• Aircraft Facilities: Galley and lavatory placements are indicated at the forward and aft ends of the cabin. Seats directly in front of exit rows or in the final cabin row may feature restricted recline.

Because Allegiant updates its digital interface periodically, always rely on the visual legend displayed on the live screen during your session.

Practical Tips for Choosing an Allegiant Seat

• Reserve at Booking for Contiguous Seats: If sitting with your children, spouse, or travel companions is essential, buy seats when booking the ticket before unassigned blocks disappear.
• Review the Final Screen Per Segment: Ensure you inspect the total seat price for both directions before submitting payment.
• Double-Check Exit Row Eligibility: Verify that everyone assigned to an exit row meets all FAA physical criteria and English language requirements to prevent gate reassignment.
• Hold Off on Downloading Boarding Passes: If you think you might change your seat or want to check for last-minute upgrades, do not print or download your boarding pass until your choices are final.
• Coordinate Special Requests Early: If you require mobility seating or travel with an approved Portable Oxygen Concentrator, submit an SSR or call Customer Care well ahead of your travel date.
• Verify Aircraft Details: Cabin configurations differ across the A319, A320, and 737 fleets; inspect the exact layout presented during seat selection.

Sources & Official References

• Allegiant Air Optional Services & Fees: allegiantair.com/popup/optional-services-fees – Published $0.00–$80.00 per-segment seat selection fee schedule.
• Allegiant Air Seating, Check-In & Boarding: allegiantair.com/seating-checking-boarding – Assigned seating, boarding pass lockout rules, and FAA exit-row requirements.
• Allegiant Air Special Needs & Accessibility: allegiantair.com/passengers-special-needs – Title 14 CFR Part 382 disability seating, 17.8-inch seat width specifications, and POC window-seat rules.
• U.S. Department of Transportation (DOT): transportation.gov/airconsumer – Federal family seating guidance and ancillary fee refund protections.