Flights from Boston to Denver

Our cheapest offers for flights from Boston to Denver

Here you can compare cheap flights from Boston (BOS) to Denver (DEN) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Denver. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Best option
Boston
Denver
Outbound
11/03/25
direct
B60393
04h 31min
Return
11/12/25
direct
B60994
03h 53min
JetBlue Airways ?
$201
Boston
Denver
Pay attention to transfer at connecting flight
Outbound
10/18/25
1 Stopover (TYS)
G41439, G41401
22h 48min
Return
11/17/25
4 Stopovers (MSP, DTW, EWR, MYR)
SY0654, NK2383, NK0297, NK3021, NK0138
28h 40min
Allegiant Air
$399
Boston
Denver
Outbound
09/23/25
direct
B60993
04h 38min
Return
09/30/25
direct
B60994
03h 52min
JetBlue Airways ?
$204
Boston
Denver
Outbound
10/18/25
direct
B60993
04h 38min
Return
10/24/25
direct
B60994
03h 52min
JetBlue Airways ?
$210
Boston
Denver
Outbound
11/03/25
1 Stopover (CLE)
F94833, F94637
10h 44min
Return
11/12/25
1 Stopover (TPA)
F91114, F91216
08h 01min
Frontier Airlines
$239
Boston
Denver
Outbound
11/03/25
1 Stopover (PHL)
AA3186, AA3134
09h 00min
Return
11/12/25
1 Stopover (SEA)
AS0643, AS0214
09h 31min
American Airlines ?
$245
Boston
Denver
Outbound
09/04/25
1 Stopover (MSP)
SY0252, SY0655
06h 56min
Return
09/28/25
1 Stopover (MSP)
SY0658, SY0251
16h 07min
Sun Country Airlines
$245
Boston
Denver
Outbound
11/03/25
1 Stopover (CLE)
F94833, F94637
10h 44min
Return
11/12/25
1 Stopover (TPA)
F91114, F91216
08h 01min
Frontier Airlines
$250
Boston
Denver
Outbound
09/04/25
1 Stopover (JFK)
B60517, B60097
08h 14min
Return
09/28/25
direct
B60994
03h 52min
JetBlue Airways ?
$256
Boston
Denver
Outbound
09/04/25
1 Stopover (MSP)
SY0252, SY0655
06h 56min
Return
09/28/25
1 Stopover (MSP)
SY0658, SY0251
16h 07min
Sun Country Airlines ?
$257
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Boston to Denver

Favorite airline: Frontier Airlines
80 % of flights booked on the route from Boston to Denver are booked with Frontier Airlines, Delta and United Airlines.
Frontier Airlines
35 %
Delta
25 %
United Airlines
20 %
Direct flights are more expensive
Compared to flights with a stopover, direct flights are $156.00 more expensive on this route.
non stop flight
1 stop
04h 49min
08h 38min
$ 536
$ 380
Favourite connection: via Philadelphia
The most popular route is via Philadelphia and is booked by 54 % of all travelers.
Route
bookings
1 stopover Philadelphia International Airport, PA
08h 38min, from $ 380
54 %
1 stopover Minneapolis - St. Paul International Airport, MN
08h 08min, from $ 468
23 %
1 stopover New York - Newark Liberty International Airport, NJ
09h 44min, from $ 415
15 %

Important flight information

Flight information: Boston - Denver

Roundtrip from $ 200,43
Flight duration min. 04:42 / max. 12:10
Return flight duration min. 03:43/ max. 09:05
Distance 2819 km
Flights per week 75
Departure airport Airport Boston Logan International Airport, MA (BOS)
Arrival airport Airport Denver International Airport, CO (DEN)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Denver
Flight destinations with a similar price
Flight destinations with a similar price