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Cheap flights from St Louis (STL) to Boston (BOS)

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1 Adults (11+)
0 Children (2~11)
0 Infants (0~2)
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How to find the cheapest flight from St Louis (STL) to Boston (BOS)

How to find the cheapest flight from St Louis (STL) to Boston (BOS)
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How to find the cheapest flight from St Louis (STL) to Boston (BOS)
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How to find the cheapest flight from St Louis (STL) to Boston (BOS)
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Cheap flights from St Louis to Boston in December 2025 , January 2026

25 Dec - 21 Jan $ 187.00
STL
St Louis
Frontier Airlines
1 STOPS
BOS
Boston
BOS
Boston
Frontier Airlines
1 STOPS
STL
St Louis
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25 Dec - 06 Jan $ 1,086.00
STL
St Louis
Alaska Airlines
1 STOPS
BOS
Boston
BOS
Boston
Alaska Airlines
1 STOPS
STL
St Louis
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25 Dec - 03 Jan $ 1,741.00
STL
St Louis
Hawaiian Airlines
1 STOPS
BOS
Boston
BOS
Boston
Hawaiian Airlines
1 STOPS
STL
St Louis
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Last minute flights from St Louis to Boston

25 Dec - 31 Dec $ 397.00
STL
St Louis
United Airlines
1 STOPS
BOS
Boston
BOS
Boston
United Airlines
1 STOPS
STL
St Louis
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25 Dec - 31 Dec $ 397.00
STL
St Louis
United Airlines
1 STOPS
BOS
Boston
BOS
Boston
United Airlines
1 STOPS
STL
St Louis
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24 Dec - 31 Dec $ 517.00
STL
St Louis
United Airlines
1 STOPS
BOS
Boston
BOS
Boston
United Airlines
1 STOPS
STL
St Louis
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One-way flights to Boston from St Louis

1:05 PM - 5:10 PM
United Airlines
1 Stops
4h 43m
STL - BOS
$ 199
Kiwi
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12:29 PM - 5:00 PM
United Airlines
1 Stops
4h 44m
STL - BOS
$ 199
Kiwi
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8:15 AM - 12:43 PM
United Airlines
1 Stops
5h 5m
STL - BOS
$ 199
Kiwi
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How to find the cheapest flight from St Louis (STL) to Boston (BOS)

Related info for your journey
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How to find the cheapest flight from St Louis (STL) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.
How to find the cheapest flight from St Louis (STL) to Boston (BOS)
Some placeholder content for the first accordion panel. This panel is shown by default, thanks to the .show class.