Direct flights from Boston to Denver BOS → DEN
Delta Air Lines, JetBlue Airways, Southwest Airlines and United Airlines fly nonstop from Boston (BOS) to Denver (DEN), several times daily. The flight takes about 4h 7m and covers 1,750 miles (2,816 km). Round-trip fares typically run around $370, with recent bookable fares from $237. Arrivals run on time 75.4% at BOS and 80.3% at DEN — BTS data for the last three months, counting arrivals within 15 minutes of schedule. Fares last checked 29 August 2026.
60-day flexibility overview based on 122 recent fares across the next 60 days
What flexibility is worth here
Flying in November rather than September typically saves $46 on BOS → DEN.
Typical round-trip fare by departure month, across the 3 months we currently track.
How long you stay changes it too
Staying 6–9 nights typically costs $7 less than 10–16 nights.
Most people pick dates first and see the price second. We watch every date combination on this route and tell you when a good one gets cheap. Watch BOS → DEN →
Cheapest combos
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United
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JetBlue Airways
B6
Delta Air Lines
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United Airlines
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Southwest Airlines
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Departure Schedule typical week
Typical weekly schedule · 91 flights per week (~13 per day) · Updated 50d ago
JetBlue Airways
Delta Air Lines
United Airlines
Southwest Airlines
Frequently asked questions
Is there a direct flight from Boston to Denver?
Yes, Delta Air Lines, JetBlue Airways and 2 more airlines operate nonstop flights from Boston (BOS) to Denver (DEN).
Which airlines fly direct from Boston to Denver?
Delta Air Lines, JetBlue Airways, Southwest Airlines, United Airlines operate nonstop flights from Boston to Denver.
How long is the flight from Boston to Denver?
The nonstop flight from Boston to Denver takes ~4h 7m (approximately 2816 km).
How often do direct flights operate from Boston to Denver?
Nonstop flights from Boston to Denver operate multiple daily — 91 flights per week (~13 per day).
What is the on-time performance for flights from Boston to Denver?
Arrivals run on time 75.4% at BOS and 80.3% at DEN — BTS data for the last three months, counting arrivals within 15 minutes of schedule.
What days of the week are there direct flights from Boston to Denver?
Direct flights from Boston to Denver operate every day of the week. JetBlue Airways flies daily, Delta Air Lines flies daily, United Airlines flies daily, and Southwest Airlines flies daily.
How much is a round-trip flight from Boston to Denver?
Round-trip flights from Boston (BOS) to Denver (DEN) start at $217, with a typical fare around $370. Based on 122 recent fare combinations.
What is the cheapest month to fly from Boston to Denver?
Across the 3 departure months we currently track, November 2026 is the cheapest month to fly round trip from Boston to Denver, with typical fares around $370 — versus about $416 in September 2026, the most expensive.
Does trip length change the round-trip fare from Boston to Denver?
Typical round-trip fares from Boston (BOS) to Denver (DEN) by trip length: a week away (6–9 nights) about $370 and around two weeks (10–16 nights) about $377. Medians from 122 recent fare combinations.
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Scout — our search agent — priced 114 fares on this route in the past week, cheapest $237 round trip. It hunts nonstop fares from Boston every night and pings you when one's worth booking.
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