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Cheap flights from New Hampshire to Key West from $129

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New Hampshire to Key West departing on 1/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from New Hampshire to Key West

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
9:05 am - 1:24 pmBOS  Boston Logan Intl-EYW Key West
4h 19mnonstop
American Airlines Logo
1:00 pm - 4:33 pmEYW  Key West-BOS Boston Logan Intl
3h 33mnonstop
$257American Airlines
Tue, Jan 5 - Sat, Jan 9
Multiple Airlines Logo
11:05 am - 12:38 pmBOS  Boston Logan Intl-EYW Key West
25h 33m1 stop Orlando
Multiple Airlines Logo
11:09 am - 10:42 amEYW  Key West-BOS Boston Logan Intl
23h 33m1 stop Knoxville McGhee Tyson
$266Multiple Airlines
Wed, Oct 21 - Mon, Oct 26
American Airlines Logo
9:05 am - 1:24 pmBOS  Boston Logan Intl-EYW Key West
4h 19mnonstop
American Airlines Logo
4:04 pm - 11:54 pmEYW  Key West-BOS Boston Logan Intl
7h 50m1 stop Charlotte Douglas
$267American Airlines
Tue, Jan 5 - Tue, Jan 12
Multiple Airlines Logo
12:35 pm - 9:24 amBOS  Boston Logan Intl-EYW Key West
20h 49m2 stops Atlanta Hartsfield-Jackson Tampa
Multiple Airlines Logo
11:09 am - 10:42 amEYW  Key West-BOS Boston Logan Intl
23h 33m1 stop Knoxville McGhee Tyson
$271Multiple Airlines
Tue, Oct 27 - Mon, Nov 2
United Airlines Logo
6:00 am - 1:11 pmBOS  Boston Logan Intl-EYW Key West
7h 11m1 stop Chicago O'Hare Intl
United Airlines Logo
4:05 pm - 1:06 amEYW  Key West-BOS Boston Logan Intl
9h 01m1 stop Chicago O'Hare Intl
$297United Airlines
Mon, Dec 7 - Sat, Dec 12
United Airlines Logo
6:00 am - 3:06 pmBOS  Boston Logan Intl-EYW Key West
9h 06m1 stop Chicago O'Hare Intl
United Airlines Logo
2:30 pm - 11:54 pmEYW  Key West-BOS Boston Logan Intl
9h 24m2 stops Newark Washington, D.C. Dulles Intl
$302United Airlines
Sun, Jan 17 - Fri, Jan 22
Delta Logo
6:00 am - 1:37 pmPWM  Portland-EYW Key West
7h 37m1 stop New York LaGuardia
Delta Logo
7:00 am - 4:59 pmEYW  Key West-PWM Portland
9h 59m2 stops Atlanta Hartsfield-Jackson New York LaGuardia
$306Delta
Wed, Jan 13 - Wed, Jan 20
Delta Logo
2:15 pm - 8:02 pmPWM  Portland-EYW Key West
5h 47m1 stop Atlanta Hartsfield-Jackson
Delta Logo
7:35 am - 3:58 pmEYW  Key West-PWM Portland
8h 23m2 stops Atlanta Hartsfield-Jackson Detroit Metropolitan Wayne County
$306Delta
Sat, Nov 14 - Wed, Nov 18
JetBlue Logo
8:29 am - 12:24 pmBOS  Boston Logan Intl-EYW Key West
3h 55mnonstop
JetBlue Logo
1:14 pm - 4:47 pmEYW  Key West-BOS Boston Logan Intl
3h 33mnonstop
$364JetBlue
Wed, Dec 9 - Wed, Dec 16
JetBlue Logo
8:29 am - 12:24 pmBOS  Boston Logan Intl-EYW Key West
3h 55mnonstop
JetBlue Logo
1:14 pm - 4:47 pmEYW  Key West-BOS Boston Logan Intl
3h 33mnonstop
$364JetBlue
Tue, Dec 8 - Tue, Dec 15

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American Airlines flights from New Hampshire to Key West

Our best American Airlines deals on New Hampshire to Key West flight tickets
American Airlines
Jan 5
BOS9:05 amBoston Logan Intl
4h 19m
EYW1:24 pmKey West
Jan 9
EYW1:00 pmKey West
3h 33m
BOS4:33 pmBoston Logan Intl
$257
American Airlines
Jan 16
BOS6:17 pmBoston Logan Intl
5h 39m
1 stop
EYW11:56 pmKey West
Jan 23
EYW1:00 pmKey West
3h 33m
BOS4:33 pmBoston Logan Intl
$267
American Airlines
Oct 9
BOS2:13 pmBoston Logan Intl
5h 20m
1 stop
EYW7:33 pmKey West
Oct 13
EYW8:03 pmKey West
4h 56m
1 stop
BOS12:59 amBoston Logan Intl
$277

Allegiant Air flights from New Hampshire to Key West

Our best Allegiant Air deals on New Hampshire to Key West flight tickets
Allegiant Air
Oct 29
BOS10:32 amBoston Logan Intl
22h 32m
1 stop
EYW9:04 amKey West
Nov 1
EYW2:33 pmKey West
18h 23m
1 stop
BOS8:56 amBoston Logan Intl
$294
Allegiant Air
Nov 27
BOS12:56 pmBoston Logan Intl
20h 12m
1 stop
EYW9:08 amKey West
Dec 3
EYW11:01 amKey West
21h 38m
1 stop
BOS8:39 amBoston Logan Intl
$339
Allegiant Air
Oct 29
BOS10:32 amBoston Logan Intl
21h 07m
2 stops
EYW7:39 amKey West
Nov 1
EYW2:33 pmKey West
18h 23m
1 stop
BOS8:56 amBoston Logan Intl
$352

momondo Fare Finder

 
Customize your flight search to find flights from New Hampshire to Key West that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated August 13, 2026.
Use the filters below to find and compare flights from New Hampshire to Key West that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Tue 1/5

9:05 am-1:24 pm

Nonstop4h 19m

Key West

Sat 1/9

1:00 pm-4:33 pm

Nonstop3h 33m

$257

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Wed 10/21

11:05 am-12:38 pm

1 stop25h 33m

Key West

Mon 10/26

11:09 am-10:42 am

1 stop23h 33m

$266

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Tue 1/5

9:05 am-1:24 pm

Nonstop4h 19m

Key West

Tue 1/12

4:04 pm-11:54 pm

1 stop7h 50m

$267

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Tue 10/27

12:35 pm-9:24 am

2 stops20h 49m

Key West

Mon 11/2

11:09 am-10:42 am

1 stop23h 33m

$271

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Mon 12/7

6:00 am-1:11 pm

1 stop7h 11m

Key West

Sat 12/12

4:05 pm-1:06 am

1 stop9h 01m

$297

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Sun 1/17

6:00 am-3:06 pm

1 stop9h 06m

Key West

Fri 1/22

2:30 pm-11:54 pm

2 stops9h 24m

$302

PortlandKey West

PWM Portland - EYW Key West

PWMEYW

Portland

Wed 1/13

6:00 am-1:37 pm

1 stop7h 37m

Key West

Wed 1/20

7:00 am-4:59 pm

2 stops9h 59m

$306

PortlandKey West

PWM Portland - EYW Key West

PWMEYW

Portland

Sat 11/14

2:15 pm-8:02 pm

1 stop5h 47m

Key West

Wed 11/18

7:35 am-3:58 pm

2 stops8h 23m

$306
Quickest round-trip

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Wed 12/9

8:29 am-12:24 pm

Nonstop3h 55m

Key West

Wed 12/16

1:14 pm-4:47 pm

Nonstop3h 33m

$364

BostonKey West

BOS Boston Logan Intl - EYW Key West

BOSEYW

Boston Logan Intl

Tue 12/8

8:29 am-12:24 pm

Nonstop3h 55m

Key West

Tue 12/15

1:14 pm-4:47 pm

Nonstop3h 33m

$364

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Key West from

How to get the cheapest flight ticket from New Hampshire to Key West

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Key West?

In general, May is the cheapest month to fly from New Hampshire to Key West. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $428. If you are unable to visit Key West during the month of May, then departing from New Hampshire during the month January is also very affordable. Most momondo users find prices during this month for around $433.

What is the cheapest day to depart on your flight to Key West?

On average, the least expensive day to fly to Key West from New Hampshire is on a Sunday. momondo users have found tickets for Sunday departures for as low as $394. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from New Hampshire to Key West for around $566.

How far in advance should I book a flight from New Hampshire to Key West?

You are more likely to see cheaper flights to Key West from New Hampshire when booking weeks ahead of your departure date. In general, you can expect to find flights to Key West for around $423 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Key West from New Hampshire for as low as $389 on momondo.

Cheap New Hampshire to Key West flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New Hampshire to Key West

Fastest flight time

3h 53m

Direct flights

Every day

Airports in Key West

1 airport
The fastest flight from New Hampshire to Key West takes 3h 53m
Direct flights go from New Hampshire to Key West every day.
There is 1 airport in Key West. From New Hampshire there are direct flights to Key West (EYW).
Search flight deals

Frequently asked questions about flying from New Hampshire to Key West

  • When did momondo last update prices for flights from New Hampshire to Key West Airport?

    Prices for flights from New Hampshire to Key West Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from New Hampshire to Key West Airport?

  • How old do you have to be to fly from New Hampshire to Key West Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from New Hampshire to Key West Airport.

  • What documentation or ID do you need to fly to Key West Airport?

    The travel and health documents you'll need for your trip to Key West Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Key West Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from New Hampshire to Key West

Compare and see reviews for airlines that fly from New Hampshire to Key West with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $316Free CancellationRating
7.1
11,923 reviews
Search American Airlines flights

Traveling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Big Pine Key
Little Torch Key

Why use momondo?

Why should I use momondo to find a flight deal from New Hampshire to Key West?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from New Hampshire to Key West. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from New Hampshire to Key West with flexible booking policies on momondo?

Yes. All flights to Key West from New Hampshire on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from New Hampshire to Key West?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Key West from New Hampshire.

I’m not ready to book a flight from New Hampshire to Key West right now. Can momondo alert me if prices change?

Yes. momondo can track prices for New Hampshire to Key West flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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