MTY - SEA

$318 Find Cheap Flights from Monterrey to Seattle

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Monterrey to Seattle departing on 7/31. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Monterrey to Seattle, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Monterrey to Seattle, as well as popular online travel agencies
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Cheap Flights from Monterrey to Seattle (MTY-SEA)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Monterrey to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Monterrey to Seattle

Thu, Jul 31 - Mon, Aug 11
Alaska Airlines Logo
3:45 pm - 11:06 pmMTY-SEA
8h 21m1 stop
Alaska Airlines Logo
6:45 pm - 2:55 pmSEA-MTY
19h 10m1 stop
$318Alaska Airlines
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Thu, Jul 31 - Mon, Aug 11
Alaska Airlines Logo
3:45 pm - 11:06 pmMTY-SEA
8h 21m1 stop
Alaska Airlines Logo
9:07 pm - 2:55 pmSEA-MTY
16h 48m1 stop
$319Alaska Airlines
Find Deal
Thu, Jul 31 - Mon, Aug 11
Alaska Airlines Logo
3:45 pm - 11:06 pmMTY-SEA
8h 21m1 stop
Alaska Airlines Logo
6:45 pm - 2:55 pmSEA-MTY
19h 10m1 stop
$320Alaska Airlines
Find Deal
Tue, Jul 29 - Fri, Aug 22
Delta Logo
10:20 am - 8:00 pmMTY-SEA
10h 40m1 stop
Delta Logo
11:55 pm - 11:25 amSEA-MTY
10h 30m2 stops
$330Delta
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Fri, Aug 1 - Sun, Aug 24
Delta Logo
11:08 am - 8:00 pmMTY-SEA
9h 52m1 stop
Delta Logo
5:45 pm - 2:57 pmSEA-MTY
20h 12m2 stops
$332Delta
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Sat, Aug 23 - Sat, Aug 30
American Airlines Logo
7:14 am - 8:34 pmMTY-SEA
14h 20m1 stop
American Airlines Logo
11:30 pm - 8:50 amSEA-MTY
8h 20m1 stop
$334American Airlines
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Thu, Jul 31 - Thu, Aug 21
United Airlines Logo
4:50 pm - 12:59 amMTY-SEA
9h 09m1 stop
United Airlines Logo
7:00 am - 3:50 pmSEA-MTY
7h 50m1 stop
$337United Airlines
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Thu, Jul 31 - Mon, Aug 11
Aeromexico Logo
5:46 am - 10:44 pmMTY-SEA
17h 58m2 stops
Aeromexico Logo
10:00 pm - 9:12 amSEA-MTY
10h 12m1 stop
$339Aeromexico
Find Deal
Mon, Jul 28 - Thu, Aug 21
United Airlines Logo
4:50 pm - 12:59 amMTY-SEA
9h 09m1 stop
United Airlines Logo
11:58 pm - 8:37 amSEA-MTY
7h 39m1 stop
$343United Airlines
Find Deal
Wed, Jul 23 - Thu, Jul 31
Aeromexico Logo
4:15 pm - 8:35 amMTY-SEA
17h 20m2 stops
Aeromexico Logo
3:30 pm - 8:45 amSEA-MTY
16h 15m2 stops
$437Aeromexico
Find Deal
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KAYAK's insights & trends for Monterrey to Seattle flights

Get data-powered insights and trends into flights from Monterrey to Seattle to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Monterrey to Seattle?

The average price of all round-trip flights from Monterrey to Seattle clicked on KAYAK for each day over the last 12 months.

When flying from Monterrey to Seattle, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Monterrey, you’ll find the best rates on Thursdays and the most expensive ones on Sundays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Monterrey to Seattle, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Monterrey to Seattle is January, where tickets cost $308 (return) on average. On the other hand, the most expensive months are December and October, where the average cost of round-trip tickets is $606 and $584 respectively.

How far in advance should I book a flight from Monterrey to Seattle?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Monterrey to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Monterrey to Seattle, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 26 weeks before departure.

Good to know

Low seasonJanuary
High seasonSeptember
Cheapest flight$318
Best time to beat the crowds with an average 35% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Monterrey to Seattle

When to book flights from Monterrey to Seattle

Are your dates flexible? Find out the best times to travel from Monterrey to Seattle based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Monterrey to Seattle

  • What is the cheapest flight from Monterrey to Seattle?

    In the last 3 days, the lowest price for a flight from Monterrey to Seattle was $318 for a round-trip ticket.

  • Do I need a passport to fly between Monterrey and Seattle?

    Yes

  • Which aircraft models fly most regularly from Monterrey to Seattle?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Monterrey to Seattle?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Monterrey and Seattle, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Monterrey to Seattle, Delta or Aeromexico?

    The two airlines most popular with KAYAK users for flights from Monterrey to Seattle are Delta and Aeromexico. With an average price for the route of $535 and an overall rating of 8.0, Delta is the most popular choice. Aeromexico is also a great choice for the route, with an average price of $528 and an overall rating of 7.5.

  • How does KAYAK find such low prices on flights from Monterrey to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Monterrey to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Monterrey to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Monterrey is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Monterrey to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Monterrey with another airline. Booking your flights between Monterrey and SEA can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Monterrey to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Monterrey up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Monterrey to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Monterrey to Seattle. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Monterrey to Seattle? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7951 reviews
8.5Crew
8.2Boarding
7.3Food
7.9Comfort
7.9Entertainment
Airline reviews

The checkpoint hornets are always looking fhrough Americans' luggage keeping what they deem impassible! Grrrrr!

6.0 GoodSharon, Jun 2025MEX - PHX
Read more Delta reviews

The checkpoint hornets are always looking fhrough Americans' luggage keeping what they deem impassible! Grrrrr!

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Boarding was organised and relaxed. Crew were fantastic! Seats were lacking padding causing butt pain and stiffness.

Food from the flight from Atlanta to Santiago was very poor..

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

I love the free WiFi!! Crew was nice. Bathroom was decent. First time flying delta in a long time and I enjoyed it. Will definitely look into booking with Delta more but I think Delta is a little more expensive than the other airlines.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Flight left early and arrived early. the whole trip was excellent.

Overall, it was okay. Seat was a little cramped. Would’ve liked more substantial snacks or opportunity to buy some.

I think they can provide the better food/snack option for the 4 hours flight. Drinks are fine.

It was good in general. The Crew during the flight were very nice at all times.

The ground staff were not as friendly and nice to the passengers as the air crew. Flight attendants, cockpit crew were great and very nice to everyone on board.

My flight was delayed, then I got transferred to a new flight that was also delayed- which wasn’t Aeromexico’s fault, it was because of weather conditions. Most of the crew was very nice and patient, except for one or two flight attendants who were rude. The entertainment wasn’t on, so all the screens were off.

My wife's entertainment system did not work. Payed for flight upgrade but did not receive advertised "free WiFi".

Annoying that we had to go to departures and get boarding passes. Should allow us to be booked all the way through, this is the only airline i have this problem with in MEX. Late boarding and take off

the guy in front of me put his seat back immediately...and then left it back including thru landing and taxiing to the runway. attendants did not check/ask him to put it up for landing.

The airplane was an old airplane, seats were very uncomfortable and very little space, they changed my seat and that was no option to get back into my seat even when I was traveling a senior who required assistance.

This is not a low cost airline. Stop acting like o e.

Aeromexico crew made me check my hand luggage in the door of the plane. As soon as I reach Mexico City, I notice that my luggage was opened and 8 games of Nintendo Switch were stolen (700 dllrs value aprox) (the console was there) but the games were stolen. I am very dissapointed of Aeromexico and all the crew. Instead of being a good trip, It was a sad trip

Ok. But we arrived to a remote terminal which meant that a bus had to take us to the terminal building

I liked the choice of lemon ginger tea. I think stewardesses can be more considerate of older people needs.

I would have liked an opportunity to move to a different seat ( even would have checked in my hand luggage)as I had health issues where I didn't have to clamber over the passenger next to me to for toilet use/ movement [ She was a highly unpleasant neighbor to sit next to]. In addition, I found that my European phone plan had run out of data and so I was not receiving emails from yourselves on airport wifi to be able to check in online and verifications difficult as did not accept the ticket number I had. I asked for an extra blanket but was told there was none. Then I saw other passengers receiving them. I couldn't eat the food and asked for snacks : Stewardess said " on the way" but they did not bring. The best bit was the check in process in Lisbon. Very efficient. However, I did not understand why we had to collect our bags at Washington then go through customs again. It was not explained. I also with my leg and health issue had approximately mile walk to the gate ( which then changed) . There appeared to be no moving walkways or help provided.

More racist flight attandants maybe because i sm an attracticted darkskin latino man but once again bad flight attamdants they ignored me the whole flight even the woman sitting next to me notice how rude they were towards me i really never want to fly united or american airlines they alawsys have the rudesslt and racist flight attandants

It was great, I’m very grateful for the pilots and crew flight attendants for everything.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

We loved the United lounge near our gate and a rep named Aimee who was GREAT

Overall it was good. I missed my connection but I was put on another flight.

The attendant were friendly. I suggest you have a medical attendant on board every flight so that in case someone is sick , he/she will help them.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Overall a very poor experience - booked premium economy tickets but due to last minute flight delays , all my itinery went for a toss and had to fly economy class with no access to lounge or any compensation by united airlines to make up for the flight delays . i had expected better experience than that from united.

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

Initial flight was cancelled at the time of arrival to the airport, flight alternative requires switching from direct to flight with a layover, and the plane felt like it would split apart, it was so rattle-y.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Boarding gate in Honolulu was staffed with a great clerk with a soothing voice despite the flight delay of over an hour. Flight attendants in the plane were all grumpy, not pleasant looking bunch. Their sour attitude showed throughout the flight. Inly able to get a select few movies started. Most of the movie links in the “free entertainment” did not work.

Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!

I flew Business Class. Rory, one of the Cabin stewards, was attentive, explained the menu, provided appropriate drinks. was

The flight delay in Dallas created a domino effect that impacted all connecting flights, leading to an increase in the number of connections. As a result, I missed my flight from Casablanca to Marrakech due to the tight turnaround when landing in Casablanca. CMN Airport was understaffed; only one employee was available to assist passengers while others just stood by and watched. It was an extremely frustrating situation. Many passengers were crying and banging their hands on the counter while talking to customer service representative Allabough. Unfortunately, Allabough couldn’t change my flight in the system. At the same time, I was on the phone with an American Airlines customer service representative named Solomon, who said he couldn’t make the change either. So, I decided to take an ONYA Voyages train from Casablanca to Marrakech to reach my destination on Friday, June 26. It turned out to be an unpredictable trip.

The flight was fine and the crew awesome. The problem is ORD and AA. Computers went down, ORD fell apart and a 40 min flight turned into a 3 hour trip. Guess the answer is to not try and fly to ORD after noon. But, as I said, crew was awesome and did everything they could to lesson the flight time.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

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