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Baltimore to Denver BWI → DEN

Baltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)

The cheapest return found recently is $256 with Frontier Airlines, 4 Nov – 8 Nov, found 2 days ago. The cheapest one-way found recently is $101 with Frontier Airlines, 15 Dec, found yesterday.

Return

The cheapest return fare on each of 3 departure dates is usually $318 to $429.

Cheapest return found recently

$256

4 Nov – 8 Nov · Frontier Airlines

Baltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)

Leaves 4:59 p.m. · Return leaves 8:55 p.m. · 18 h 25 min of travel, both ways together

out 1 stop, back 1 stop

found 2 days ago

See prices for these datesCheck today's price

Cheapest nonstop return

None seen yet.

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Found recently, and the cheapest we hold

Cheapest found recently $256 4 Nov – 8 Novfound 2 days agoSee prices for these dates

It is also the cheapest return we hold, of any age.

What have prices looked like?

Over 25 days, 24 Sept to 18 Oct, the cheapest return we saw each day was $197 to $286.

$256, the cheapest return found recently, sits here in that range of $197 to $286.

25 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good return price?

Compared with the cheapest return fare on each of 3 departure dates from 4 Nov to 10 Mar 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

We hold no other 4-night return fares leaving within 3 days of 4 Nov to compare.

Every date we hold

3 fares on 3 departure dates

4 Nov – 8 Nov: $256, found 2 days ago25 Nov – 29 Nov: $380, found 4 days ago10 Mar 2027 – 13 Mar 2027: $477, found 2 days agoNovMar
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
4 Nov – 8 Nov$256Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates
25 Nov – 29 Nov$380Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)out 1 stop, back 1 stopfound 4 days agoSee prices for these dates
10 Mar 2027 – 13 Mar 2027$477Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)out 1 stop, back 1 stopfound 2 days agoSee prices for these dates

Which month looks cheapest?

November 2026 is the cheapest month — from $256.

November 2026From $256Cheapest seen2 departure dates4 Nov – 8 Nov · found 2 days agoSee prices for these dates
March 2027From $4771 departure date10 Mar 2027 – 13 Mar 2027 · found 2 days agoSee prices for these dates

Airlines on the cheapest dates: Frontier Airlines.

One-way

The cheapest one-way fare on each of 3 departure dates is usually $83 to $132.

Cheapest one-way found recently

$101

15 Dec · Frontier Airlines

Baltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)

Leaves 6:00 a.m. · 35 h 43 min trip

stops unknown

found yesterday

Open this tripCheck today's price

Cheapest nonstop one-way

None seen yet.

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Found recently, and the cheapest we hold

Cheapest found recently $101 15 Decfound yesterdayOpen this trip

Cheapest we hold, of any age $65 16 Decfound 3 days agoOpen this trip

What have prices looked like?

Over 5 days, 25 Sept to 18 Oct, the cheapest one-way we saw each day was $65 to $126.

$101, the cheapest one-way found recently, sits here in that range of $65 to $126.

5 days is a short history, so treat this range as an early guide.

Those were the prices on those days, not today's.

Is this a good one-way price?

Compared with the cheapest one-way fare on each of 3 departure dates from 27 Oct to 16 Dec, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.

Could nearby dates be cheaper?

Yes. Among one-way fares leaving within 3 days of 15 Dec, 16 Dec costs $65: $36 less than the cheapest found recently.

Frontier Airlines · Baltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN) · 1 stop · found 3 days ago

Open this tripCheck today's price

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Every date we hold

3 fares on 3 departure dates

27 Oct: $163, found 2 days ago15 Dec: $101, found yesterday16 Dec: $65, found 3 days agoOctDec
See the chart as a table
The cheapest price seen for each departure date — per traveler in Economy.
DatesFromAirlineAirportsStopsFound
27 Oct$163Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)stops unknownfound 2 days agoOpen this trip
15 Dec$101Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)stops unknownfound yesterdayOpen this trip
16 Dec$65Frontier AirlinesBaltimore/Wash International Thurgood Marshall Airport (BWI) → Denver International Airport (DEN)1 stopfound 3 days agoOpen this trip

Which month looks cheapest?

December 2026 is the cheapest month — from $65.

October 2026From $1631 departure date27 Oct · found 2 days agoOpen this trip
December 2026From $65Cheapest seen2 departure dates16 Dec · found 3 days agoOpen this trip

Airlines on the cheapest dates: Frontier Airlines.

Premium cabin fares from Baltimore to Denver

We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.

Today's prices for 4 Nov – 8 Nov in another cabin: Premium economy · Business · First

Today's prices for 15 Dec in another cabin: Premium economy · Business · First

How far ahead were prices cheapest for Baltimore to Denver?

Return

Fares 60 to 89 days before departure were typically 31% lower than 30 to 59 days before departure.

From the cheapest return each day between 24 Sept and 18 Oct (25 days), grouped by how many days ahead the flight left; one adult in economy.

Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.

Prices reflect recent searches — current fares may differ.

See these ranges as a table
Typical price in each booking range — round trip, per traveler in Economy.
Booked ahead byTypical fareCheapest dayAbove the cheapestDays of prices
30–59 days$293$293+45%8
60–89 days$202$197Cheapest seen14
90–179 days$286$197+42%23

One-way

Not enough history yet: we have 5 days of one-way prices, 25 Sept to 18 Oct, and compare booking times once 3 booking ranges have 7 days each.

Could a nearby airport be cheaper?

A different airport at either end can change the fare — sometimes a lot.

Return

Philadelphia → Denver

145 km from Baltimore

$295

$39 more than flying from Baltimore

21 Nov – 30 Nov · PHL → DEN · out nonstop, back 1 stop

found yesterday

See this route

Washington → Denver

57 km from Baltimore

$324

$68 more than flying from Baltimore

4 Nov – 8 Nov · DCA → DEN · out nonstop, back nonstop

found 2 days ago

Check today's price

Cheapest recent price on each route — round trip, per traveler in Economy. Distances are in a straight line.

Live price for these dates

The cheapest return found recently is for 4 Nov – 8 Nov. A live search on this page shows what those dates cost now, for one adult in economy.

Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work