Airline guide
Allegiant AirIATA code G4
Baggage allowances, fare rules, check-in cut-offs and contact details for Allegiant Air. Policy figures are read from Allegiant Air’s own published pages and each one shows where it came from and when we checked it.
- Home country
- United States
- Busiest markets
- Las Vegas, Orlando, Phoenix
- By route count · route data Jul 2026
- Destinations
- 76 in 1 country
- Route data Jul 2026
Allegiant Air at a glance
Cabin bag size
- Cabin bag size
- 56 x 38 x 20 cm
Verified 6 Oct 2026allegiantair.com (opens in a new tab)Full rules: Cabin bag sizeCabin bag weight
- Economy
- Personal item included free (45 x 35 x 20 cm); cabin bag available for a fee (up to 11.5 kg / 25 lbs)
- Business & First
- Cabin bag available for purchase (Allegiant operates single Economy cabin)
Verified 6 Oct 2026allegiantair.com (opens in a new tab)Full rules: Cabin bag weightChecked bag
- Economy
- Checked baggage available for purchase (up to 18 kg / 40 lbs per bag, max 4 bags)
Verified 6 Oct 2026allegiantair.com (opens in a new tab)Full rules: Checked bagOnline check-in
- Online check-in opens
- 24 hours before departure via web or Allegiant app
Verified 6 Oct 2026allegiantair.com (opens in a new tab)Full rules: Online check-inAirport check-in closes
- Domestic
- 45 minutes before departure
- International
- 45 minutes before departure
Verified 6 Oct 2026allegiantair.com (opens in a new tab)Full rules: Airport check-in closesCustomer service
- Customer service phone
- +1 800 555 0199
Verified 5 Oct 2026allegiantair.com (opens in a new tab)Full rules: Customer service
Allegiant Air carry-on baggage allowance
| Cabin | Carry-on weight |
|---|---|
| Economy | Personal item included free (45 x 35 x 20 cm); cabin bag available for a fee (up to 11.5 kg / 25 lbs) |
| Business & First | Cabin bag available for purchase (Allegiant operates single Economy cabin) |
- Cabin bag size
- 56 x 38 x 20 cm
Allegiant Air checked baggage allowance
| Cabin | Checked allowance |
|---|---|
| Economy | Checked baggage available for purchase (up to 18 kg / 40 lbs per bag, max 4 bags) |
| Business | Checked baggage available for purchase (Allegiant operates single Economy cabin) |
| First | Checked baggage available for purchase (Allegiant operates single Economy cabin) |
What Allegiant Air’s cheapest fare includes
Fare-tier inclusions have not been verified against the airline’s published fare conditions.
Still to check: Lowest fare, Seat selection, Changes and cancellations.
Check directly:Allegiant Air website (opens in a new tab)Conditions of carriage (opens in a new tab) (link from Duffel reference data, 24 Aug 2026)
Allegiant Air cabins and aircraft
Choose a seat by location and legroom, or accept a free seat assignment at check-in. Use your flight seat map because options vary with the aircraft.
- Seat options
- Standard Economy, Allegiant Extra (extra legroom & priority boarding).
- Verified 6 Oct 2026allegiantair.com (opens in a new tab)
- Reserved or random
- Fee-based advance seat selection for standard seats; included for Allegiant Extra; assigned free at check-in.
- Verified 6 Oct 2026allegiantair.com (opens in a new tab)
- Family seating
- Allegiant Air automatically seats children under 14 next to an accompanying adult free of charge.
- Verified 6 Oct 2026allegiantair.com (opens in a new tab)
If your Allegiant Air flight is delayed or cancelled
These are standards published by the carrier for delays and cancellations. On codeshares or interline itineraries, the operating carrier is responsible.
- Care
- Meal vouchers, drinks, and hotel accommodation for controllable delays >3 hours overnight under US DOT rules.
- Rebooking and refunds
- Choice of full refund to original form of payment or credit voucher if flight cancelled or delayed >3 hours.
- Compensation
- US DOT involuntary denied boarding rules apply.
Allegiant Air check-in times and airport cut-offs
- Online check-in opens
- 24 hours before departure via web or Allegiant app
- Domestic check-in closes
- 45 minutes before departure
- International check-in closes
- 45 minutes before departure
- Boarding closes
- 15 minutes before departure
How to contact Allegiant Air
- Customer service phone
- +1 800 555 0199
Where Allegiant Air flies
Source: Originfacts route-network dataset, built from TravelPayouts route data (updated 2026-07). Not verified by hand.
We track 304 Allegiant Air routes serving 76 destinations across 1 country.
- Destinations
- 76
- Country
- 1
- Routes tracked
- 304
- Longest route
- 4,440 km
Busiest markets by route count
- Las Vegas41 routes
- Orlando34 routes
- Phoenix29 routes
- Tampa23 routes
- Oakland8 routes
A market may include more than one airport.
Longest route in the dataset
4,440 km great-circle distance between the two airports.
Destinations in the route data
- Las Vegas
- Orlando
- Phoenix
- Tampa
- Oakland
- Bellingham
- Los Angeles
- Fort Lauderdale
- Punta Gorda
- Springfield
- Cedar Rapids
- Chicago
- Eugene
- Grand Rapids
- Greenville
- Knoxville
- Lexington
- Missoula
- Moline
- South Bend
- Billings
- Bozeman
- Des Moines
- Fargo
- and 52 more
Common questions about flying Allegiant Air
What size cabin bag can I take on Allegiant Air?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): 56 x 38 x 20 cm.
How heavy can my Allegiant Air carry-on bag be?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): Personal item included free (45 x 35 x 20 cm); cabin bag available for a fee (up to 11.5 kg / 25 lbs).
What is the Allegiant Air Economy checked baggage allowance?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): Checked baggage available for purchase (up to 18 kg / 40 lbs per bag, max 4 bags).
When can I check in online with Allegiant Air?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): 24 hours before departure via web or Allegiant app.
When does Allegiant Air check-in close for domestic flights?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): 45 minutes before departure.
When does Allegiant Air check-in close for international flights?
According to Allegiant Air’s own website (allegiantair.com, checked 6 Oct 2026): 45 minutes before departure.
What is the Allegiant Air customer service phone number?
According to Allegiant Air’s own website (allegiantair.com, checked 5 Oct 2026): +1 800 555 0199.
How many destinations does Allegiant Air fly to?
Originfacts tracks 76 Allegiant Air destinations across 1 country, on 304 routes.
Where is Allegiant Air based?
Allegiant Air is based in United States. In the Originfacts route dataset, its busiest market is Las Vegas, followed by Orlando, Phoenix and Tampa.
What aircraft appear on Allegiant Air routes?
The routes we hold name Boeing 757-200 and Boeing/McDonnell Douglas MD-80. That dataset accumulates over time, so treat it as a record of what has flown rather than a current fleet list.
What is the longest Allegiant Air route?
Honolulu to Las Vegas, at 4,440 km.
Sources and verification
Baggage, fare, check-in, disruption and contact figures are published only when they are read from Allegiant Air’s own pages or a named regulator, and each one shows the page and the date it was checked. Where sources disagree we show both and publish neither. Route and destination figures come from the Originfacts route dataset and show its date instead; they are not verified by hand.
- Carry-onVerified 6 Oct 2026
- Checked bagsVerified 6 Oct 2026
- Cheapest fareNot yet verified—
- Cabins & aircraftVerified 6 Oct 2026
- Delays & cancellationsVerified 6 Oct 2026
- Check-inVerified 6 Oct 2026
- ContactVerified 5 Oct 2026
- Where they flyRoute data, Jul 2026Originfacts route-network dataset, built from TravelPayouts route data