Find cheap Allegiant Air flights to Key West
CMH — EYW
Aug 26 — Sep 21
Round-trip
1 adult, Economy
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Cheapest Allegiant Air flights from USA to Key WestExplore the most affordable Allegiant Air flight options available from USA to Key West. Find the lowest fares with prices last updated on July 27, 2026.
Explore the most affordable Allegiant Air flight options available from USA to Key West. Find the lowest fares with prices last updated on July 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:36 pm
PHL
- EYW
1 stop16h 05m
Allegiant Air
Sun 8/99:31 pm
EYW
- PHL
2 stops17h 46m
Allegiant Air
Deal found 7/23![Allegiant Air logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:18 pm
PHL
- EYW
1 stop15h 23m
Allegiant Air
Sat 8/12:44 pm
EYW
- PHL
2 stops26h 44m
Allegiant Air
Deal found 7/26![Allegiant Air logo]()
$702
Best Allegiant Air flights from USA to Key WestDiscover carefully curated Allegiant Air flight deals from USA to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
Discover carefully curated Allegiant Air flight deals from USA to Key West that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/96:42 pm
PHL
- EYW
1 stop14h 20m
Allegiant Air
Mon 10/1211:54 am
EYW
- PHL
1 stop6h 47m
Allegiant Air
Deal found 7/26![Allegiant Air logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 7/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/79:09 am
BOS
- EYW
2 stops23h 55m
Allegiant Air
Fri 11/1310:14 am
EYW
- BOS
1 stop22h 05m
Allegiant Air
Deal found 7/25![Allegiant Air logo]()
$303
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1311:35 am
BOS
- EYW
1 stop25h 37m
Allegiant Air
Thu 12/174:10 pm
EYW
- BOS
1 stop16h 28m
Allegiant Air
Deal found 7/23![Allegiant Air logo]()
$309
Last-minute Allegiant Air flights from USA to Key WestDiscover last-minute Allegiant Air flight deals from USA to Key West. Data last updated July 27, 2026 and is based on user searches.
Discover last-minute Allegiant Air flight deals from USA to Key West. Data last updated July 27, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:36 pm
PHL
- EYW
1 stop16h 05m
Allegiant Air
Sun 8/99:31 pm
EYW
- PHL
2 stops17h 46m
Allegiant Air
Deal found 7/23![Allegiant Air logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 7/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/306:18 pm
PHL
- EYW
1 stop15h 23m
Allegiant Air
Sat 8/12:44 pm
EYW
- PHL
2 stops26h 44m
Allegiant Air
Deal found 7/26![Allegiant Air logo]()
$702
One-way Allegiant Air flights to Key WestSearch for one-way Allegiant Air flight options to Key West. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
Search for one-way Allegiant Air flight options to Key West. Find affordable one-way fares based on user searches. Data last updated July 27, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:42 pm
PHL
- EYW
1 stop20h 26m
Allegiant Air
Deal found 7/27![Allegiant Air logo]()
$104
This Kiwi.com deal was found by Cheapflights users on 7/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/65:36 pm
PHL
- EYW
1 stop16h 05m
Allegiant Air
Deal found 7/24![Allegiant Air logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 7/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:24 am
PHL
- EYW
1 stop10h 10m
Allegiant Air
Deal found 7/23![Allegiant Air logo]()
$116
Flights to Key West with Allegiant Air at a glance
Find detailed information about Allegiant Air flights from USA to Key West. Explore the options provided by Allegiant Air to plan your journey from USA to Key West. Data last updated July 27, 2026.
Popular in | March |
|---|---|
Cheapest in | January |
Average price | $142 |
Round-trip from | $246 |
One-way from | $104 |
Good round-trip deal | $86 or less |
Good one-way deal | $63 or less |
Cheapflights Insights
Find cheap Allegiant Air flights to Key West
US0-EYW
PHL-EYW
BOS-EYW
How long is the flight to Key West with Allegiant Air?
On average, Allegiant Air flights from the United States to Key West take 3 hours 4 minutes. Flights to Key West from other popular cities in the United States will vary in length. Below are a few examples of popular routes and their flight times.
Allegiant Air weekly flight availability to Key West
The most flights to Key West operated by Allegiant Air are scheduled on a Sunday (9 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (0 on average).
When is the best time to book a flight to Key West with Allegiant Air?
The best time to book a flight to Key West with Allegiant Air is 58 days before departure. On average, fares are higher if you book 85 days before departure.
FAQs about flights to Key West with Allegiant Air
Reviews of Allegiant Air
See what Cheapflights users have to say about their Allegiant Air experience.
Overview
Reviews
Allegiant Air
681 reviews
Overview
Boarding
7.7
Entertainment
5.4
Comfort
6.9
Food
5.8
Crew
8.1
Recent reviews
10.0
|Jun 2026Everything about the flight timing was perfect. The plane was clean and comfortable. The only aggravation is no access to phone charging or complementary food/drink on a cross-country trip. There were no entertainment options, so I'm not sure how I'm supposed to evaluate that on a survey. It's a discount carrier, I get it, but other options are flying the same route with better depart/arrival times that offer these options.
10.0
|Jun 2026Amazing the only thing I would change is the price gouging. They do for the checked bag or the carry on bag. It's a little absurd. I'm already paying them $500. And I can't take a carry on?!
10.0
|May 2026Great!
2.0
|Apr 2026After waiting more than 6 hours our flight was delayed until the next day. The flight was extremely uncomfortable. Like riding on hard plastic lawn chairs in the sky.
4.0
|Feb 2026I appreciate the low cost but the seating is ridiculous. So packed it feels dangerous. Actually it was so bad today, I'm going to look for another airline next time I fly.
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