Cheap flights from Baltimore to Seattle from $244 BWI → SEA

Found recently, and the cheapest we hold

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

What have prices looked like?

Over 50 days, 24 Sept to 12 Nov, the cheapest return we saw each day was $191 to $469.

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

Could nearby dates be cheaper?

We hold no other 3-night return fares leaving within 3 days of 22 Jan 2027 to compare.

Every date we hold

6 fares on 5 departure dates

Which month looks cheapest?

January 2027 is the cheapest month — from $396.

Found recently, and the cheapest we hold

It is also the cheapest one-way we hold, of any age.

What have prices looked like?

Over 32 days, 24 Sept to 12 Nov, the cheapest one-way we saw each day was $124 to $223.

At $244, the cheapest one-way found recently is above that range.

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

Could nearby dates be cheaper?

We hold no other one-way fares leaving within 3 days of 30 Jun 2027 to compare.

Every date we hold

2 fares on 1 departure dates

Return

Fares 14 to 29 days before departure were typically 40% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 12 Nov (50 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.

One-way

The cheapest fares were 30 to 59 days before departure.

From the cheapest one-way each day between 24 Sept and 12 Nov (32 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.

How much is a return flight from Baltimore to Seattle?

The cheapest return found recently is $396 with Alaska Airlines, 22 Jan 2027 to 25 Jan 2027, found today. The cheapest return fare on each of 5 departure dates is usually $425 to $448.

How much is a one-way flight from Baltimore to Seattle?

The cheapest one-way found recently is $244 with Southwest Airlines, 30 Jun 2027, found yesterday.

What is the cheapest month to fly from Baltimore to Seattle?

January 2027 is the cheapest month for a return, from $396, 22 Jan 2027 to 25 Jan 2027, found today.

How far ahead should I book a flight from Baltimore to Seattle?

In 50 days of prices between 24 Sept and 12 Nov, return fares 14 to 29 days before departure were typically 40% lower than 0 to 6 days before departure. In 32 days of prices between 24 Sept and 12 Nov, one-way fares were cheapest 30 to 59 days before departure.

Is there a direct flight from Baltimore to Seattle?

Yes, the cheapest nonstop return found recently is $496 with Alaska Airlines, 29 Dec to 31 Dec, found today. The cheapest nonstop one-way found recently is $257 with Alaska Airlines, 30 Jun 2027, found 6 days ago.

How long is the flight from Baltimore to Seattle?

The cheapest nonstop one-way found recently, with Alaska Airlines on 30 Jun 2027, takes 5 h 51 min from Baltimore/Wash International Thurgood Marshall Airport (BWI) to Seattle-Tacoma International Airport (SEA). The cheapest one-way found recently, with Southwest Airlines on 30 Jun 2027, takes 9 h 45 min with 1 stop.

Which airlines have the cheapest flights from Baltimore to Seattle?

Between 25 Dec and 6 Feb 2027, Alaska Airlines has the cheapest return on 3 of the 5 departure dates we hold, and Frontier Airlines on 2.