Southwest® flights from Denver to Boston from $78

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Low fares from Denver to Boston

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Denver (DEN)to

Boston (BOS)
Depart: 03/05/2026

One-way

Basic

From
$78
Seen: 17 hrs ago

Denver (DEN)to

Boston (BOS)
Depart: 03/04/2026

One-way

Basic

From
$78
Seen: 59 minutes ago

Denver (DEN)to

Boston (BOS)
Depart: 04/20/2026

One-way

Basic

From
$79
Seen: 7 hrs ago

Denver (DEN)to

Boston (BOS)
Depart: 04/29/2026

One-way

Basic

From
$79
Seen: 9 hrs ago

Denver (DEN)to

Boston (BOS)
Depart: 02/24/2026

One-way

Basic

From
$88
Seen: 14 hrs ago

Denver (DEN)to

Boston (BOS)
Depart: 03/10/2026

One-way

Basic

From
$89
Seen: 9 hrs ago

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Explore flights from Denver to Boston

*Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply. Modifying this information may result in a different fare. To find the most updated fare, please visit Southwest.com. Fares listed are Basic, which are subject to additional terms and conditions.

Flight Details

Departing from:
Denver International Airport
Arriving at:
Logan International Airport
Average flight time:
3 hours 51 minutes
Distance:
1754 miles

Route Information

155† Weekly flights
  • 3‡ Nonstop flights per day Monday through Friday
  • 2‡ Nonstop flights on Saturday
  • 3‡ Nonstop flights on Sunday

† Weekly flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025. Note: route may not operate every day of the week.

‡ Nonstop flights based on DOT published scheduled average flights Monday through Sunday between 9/1/2025 and 9/30/2025.

Questions we hear the most

The average flight time from Denver to Boston is 3 hours 51 minutes.
There are 155 weekly flights from Denver to Boston on Southwest Airlines.
Yes, Southwest flies nonstop from Denver to Boston 3 times per day from Monday through Friday.
Yes, Southwest flies nonstop from Denver to Boston 2 times per day on Saturdays and 3 times per day on Sundays.
To find the lowest fares by day and time to fly Denver to Boston with Southwest, check out our Low Fare Calendar.
You can rent a car at Logan International Airport book yours with your flight.
Yes! Flights from Denver to Boston—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight.
Check out the Southwest Airlines® Help Center for answers about everything Southwest.

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