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Find cheap flights from New Hampshire to St. Louis from $49

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to St. Louis departing on 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Tue 6/4
Tue 6/11

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In the last 7 days travelers have searched 42,830,901 times on KAYAK, and here is why:

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Good to know

Low season

January

High season

May

Cheapest flight

$49
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Boston to St. Louis

FAQs for booking flights from New Hampshire to St. Louis

  • How does KAYAK find such low prices on flights from New Hampshire to St. Louis?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from New Hampshire to St. Louis.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from New Hampshire to St. Louis?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from New Hampshire is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from New Hampshire to St. Louis?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to St. Louis with an airline and back to New Hampshire with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from New Hampshire to St. Louis?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to St. Louis from New Hampshire up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Prefer to fly non-stop from New Hampshire to St. Louis?

Find which airlines fly direct from New Hampshire to Lambert-St Louis, which days they fly and book direct flights.

Nonstop departures

New Hampshire to Lambert-St Louis

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights

Nonstop returns

Lambert-St Louis to New Hampshire

Monday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Tuesday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Wednesday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Thursday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Friday

ANA, Aer Lingus, Aeromexico, +38 more

ANA, Aer Lingus, +39 more

Saturday

ANA, Aer Lingus, Aeromexico, +39 more

ANA, Aer Lingus, +40 more

Sunday

ANA, Aer Lingus, Aeromexico, +40 more

ANA, Aer Lingus, +41 more

See more direct flights
See more direct flights

Book cheap flights from New Hampshire to St. Louis

Recent round-trip flight deals

5/16Thu
1 stopFrontier
21h 42mBOS-STL
5/18Sat
1 stopFrontier
15h 18mSTL-BOS
$149
5/16Thu
1 stopFrontier
21h 42mBOS-STL
5/18Sat
1 stopFrontier
15h 18mSTL-BOS
$152
5/26Sun
1 stop
12h 19mBOS-STL
5/29Wed
1 stop
10h 30mSTL-BOS
$167
5/29Wed
1 stop
22h 16mBOS-STL
6/2Sun
1 stop
26h 55mSTL-BOS
$177
5/30Thu
1 stopSpirit Airlines
12h 19mBOS-STL
6/2Sun
1 stopSpirit Airlines
15h 36mSTL-BOS
$186
6/6Thu
1 stopSpirit Airlines
12h 18mBOS-STL
6/9Sun
1 stopSpirit Airlines
17h 09mSTL-BOS
$198
5/29Wed
1 stopDelta
5h 28mBOS-STL
6/5Wed
1 stopDelta
7h 18mSTL-BOS
$264
5/26Sun
1 stopAmerican Airlines
8h 27mBOS-STL
5/29Wed
nonstopAmerican Airlines
2h 49mSTL-BOS
$267
7/2Tue
1 stopAmerican Airlines
10h 58mMHT-STL
7/4Thu
1 stopAmerican Airlines
6h 24mSTL-MHT
$272
5/31Fri
1 stopDelta
8h 00mBOS-STL
6/5Wed
1 stopDelta
7h 18mSTL-BOS
$279

Search by stops

Search by airline

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Recent one-way flight deals

5/18Sat
1 stopFrontier
7h 36mBOS-STL
$49
5/29Wed
1 stopFrontier
22h 16mBOS-STL
$60
6/5Wed
2 stopsSpirit Airlines
26h 43mBOS-STL
$65
5/13Mon
2 stopsSpirit Airlines
19h 01mBOS-STL
$80
6/11Tue
2 stops
10h 45mBOS-STL
$135
11/1Fri
1 stopDelta
4h 55mBOS-STL
$147
6/6Thu
3 stops
25h 37mBOS-STL
$151
5/29Wed
nonstopAmerican Airlines
3h 07mBOS-STL
$157
8/9Fri
1 stopAmerican Airlines
6h 46mBOS-STL
$186
5/23Thu
1 stopDelta
6h 19mBOS-STL
$199

Search by stops

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Last minute flights from New Hampshire to St. Louis

Last minute flight, train and bus deals

5/10Fri
multi-stop
14h 29mBOS-STL
5/15Wed
multi-stop
14h 30mSTL-BOS
$259
5/9Thu
multi-stopFrontier
23h 05mBOS-STL
5/15Wed
multi-stopFrontier
14h 30mSTL-BOS
$265
5/9Thu
multi-stopFrontier
23h 05mBOS-STL
5/11Sat
multi-stopFrontier
14h 31mSTL-BOS
$267
5/9Thu
multi-stopFrontier
23h 05mBOS-STL
5/17Fri
multi-stopFrontier
12h 05mSTL-BOS
$270
5/10Fri
multi-stop
14h 29mBOS-STL
5/14Tue
multi-stop
14h 30mSTL-BOS
$273
5/10Fri
multi-stopSpirit Airlines
18h 58mBOS-STL
5/13Mon
multi-stopSpirit Airlines
40h 45mSTL-BOS
$321
5/10Fri
multi-stopSpirit Airlines
30h 45mBOS-STL
5/15Wed
multi-stopSpirit Airlines
30h 10mSTL-BOS
$333
5/8Wed
multi-stopDelta
5h 16mBOS-STL
5/11Sat
multi-stopDelta
5h 00mSTL-BOS
$417
5/6Mon
multi-stopUnited Airlines
6h 45mBOS-STL
5/8Wed
multi-stopUnited Airlines
7h 07mSTL-BOS
$436
5/6Mon
multi-stopUnited Airlines
7h 06mBOS-STL
5/16Thu
multi-stopUnited Airlines
7h 07mSTL-BOS
$497

Search by stops

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Flights to St. Louis

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - New Hampshire

Cabin classes: