Cheap flights from Seattle to Mexico City from $149 BFI, SEA → MEX, NLU

Found recently, and the cheapest we hold

What have prices looked like?

Over 41 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $386 to $741.

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

Could nearby dates be cheaper?

We hold no other 21-night return fares leaving within 3 days of 7 May 2027 to compare.

Every date we hold

7 fares on 6 departure dates

Which month looks cheapest?

February 2027 is the cheapest month — from $386.

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 48 days, 24 Sept to 11 Nov, the cheapest one-way we saw each day was $149 to $688.

At $149, the cheapest one-way found recently is at the low end of that range.

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

Could nearby dates be cheaper?

No. We hold one-way fares on 1 other departure date within 3 days of 15 Jan 2027, and it is not cheaper.

Every date we hold

6 fares on 3 departure dates

Which month looks cheapest?

January 2027 is the cheapest month — from $149.

Return

Fares 60 to 89 days before departure were typically 32% lower than 0 to 6 days before departure.

From the cheapest return each day between 24 Sept and 11 Nov (41 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

Fares 90 to 179 days before departure were typically 9% lower than 14 to 29 days before departure.

From the cheapest one-way each day between 24 Sept and 11 Nov (48 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 Seattle to Mexico City?

The cheapest return found recently is $518 with American Airlines, 7 May 2027 to 28 May 2027, found 2 days ago. The cheapest return we hold, of any age, is $386 with American Airlines, 9 Feb 2027 to 10 Feb 2027, found 6 days ago. The cheapest return fare on each of 6 departure dates is usually $453 to $759.

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

The cheapest one-way found recently is $149 with American Airlines, 15 Jan 2027, found 4 days ago. The cheapest one-way fare on each of 3 departure dates is usually $156 to $242.

What is the cheapest month to fly from Seattle to Mexico City?

February 2027 is the cheapest month for a return, from $386, 9 Feb 2027 to 10 Feb 2027, found 6 days ago. January 2027 is the cheapest month for a one-way, from $149, 15 Jan 2027, found 4 days ago.

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

In 41 days of prices between 24 Sept and 11 Nov, return fares 60 to 89 days before departure were typically 32% lower than 0 to 6 days before departure. In 48 days of prices between 24 Sept and 11 Nov, one-way fares 90 to 179 days before departure were typically 9% lower than 14 to 29 days before departure.

How long is the flight from Seattle to Mexico City?

The cheapest one-way found recently, with American Airlines on 15 Jan 2027, takes 15 h 40 min with 1 stop.

Which airlines have the cheapest flights from Seattle to Mexico City?

Between 18 Dec and 7 May 2027, American Airlines has the cheapest return on 3 of the 6 departure dates we hold, WestJet on 1 and Sun Country Airlines on 1. Between 13 Dec and 16 Jan 2027, American Airlines has the cheapest one-way on 2 of the 3 departure dates we hold, and Alaska Airlines on 1.