Cheap flights from Boston to Lower Keys from CA $217

View CA $217 flight on Fri, Jan. 30, 2026Opens in a new window

Popular airlines from Boston to Lower Keys

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  • United

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  • Delta

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  • Porter Airlines

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Cheap flights from Boston (BOS) to Lower Keys (EYW)

Prices were available within the past 7 days and start at CA $217 for one-way flights and CA $407 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

JetBlue Airways
Tue, Jan. 27 - Tue, Feb. 3
BOS
Boston
EYW
Key West
CA $407 Roundtrip, found 1 day ago
CA $407
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Jan. 27 from Boston to Key West, returning Tue, Feb. 3, priced at CA $407 found 1 day ago
JetBlue Airways
Tue, Jan. 27 - Fri, Jan. 30
BOS
Boston
EYW
Key West
CA $427 Roundtrip, found 1 day ago
CA $427
Roundtrip
found 1 day ago
Select JetBlue Airways flight, departing Tue, Jan. 27 from Boston to Key West, returning Fri, Jan. 30, priced at CA $427 found 1 day ago
American Airlines
Fri, Jan. 30 - Mon, Feb. 2
BOS
Boston
EYW
Key West
CA $435 Roundtrip, found 1 day ago
CA $435
Roundtrip
found 1 day ago
Select American Airlines flight, departing Fri, Jan. 30 from Boston to Key West, returning Mon, Feb. 2, priced at CA $435 found 1 day ago
Delta
Mon, Feb. 2 - Tue, Feb. 3
BOS
Boston
EYW
Key West
CA $435 Roundtrip, found 1 day ago
CA $435
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Feb. 2 from Boston to Key West, returning Tue, Feb. 3, priced at CA $435 found 1 day ago
United
Fri, Jan. 23 - Mon, Jan. 26
BOS
Boston
EYW
Key West
CA $509 Roundtrip, found 1 day ago
CA $509
Roundtrip
found 1 day ago
Select United flight, departing Fri, Jan. 23 from Boston to Key West, returning Mon, Jan. 26, priced at CA $509 found 1 day ago
Spirit Airlines
Fri, Jan. 30 - Mon, Feb. 2
BOS
Boston
EYW
Key West
CA $986 Roundtrip, found 1 day ago
CA $986
Roundtrip
found 1 day ago
Select Spirit Airlines flight, departing Fri, Jan. 30 from Boston to Key West, returning Mon, Feb. 2, priced at CA $986 found 1 day ago

Find the cheapest month to fly from Boston (BOS) to Key West (EYW)

October is typically the cheapest month to fly

From CA $255 - CA $517 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.