HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Hermosillo

$380+ Cheap flights from Seattle (SEA) to Hermosillo (HMO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — HMO
febr. 14 — febr. 211
ds. 2/14
ds. 2/21
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Hermosillo with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Seattle to Hermosillo

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Hermosillo (HMO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated gener 15, 2026.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$362
(Orbitz)

Popular in

December

Cheapest in

April

Average price

$730
Provider with most accurate pricing for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Hermosillo Gen Pesqueira Garcia flights.
Search Deals
From Seattle/Tacoma Intl to Hermosillo Gen Pesqueira Garcia
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($123 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Seattle to Hermosillo

Cheapest flights from Seattle to Hermosillo
Explore the most affordable flight options available from Seattle to Hermosillo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on gener 15, 2026.

This Travelocity deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 2/2610:00 pm
SEA
-
HMO
1 stop8h 45m
Volaris
dg. 3/18:26 am
HMO
-
SEA
1 stop12h 22m
Volaris
Deal found 1/15$433
This Kiwi.com deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 2/269:28 am
SEA
-
HMO
2 stops21h 17m
Multiple Airlines
dg. 3/19:45 am
HMO
-
SEA
1 stop11h 03m
Multiple Airlines
Deal found 1/15$484
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 5/66:30 am
SEA
-
HMO
1 stop4h 59m
American Airlines
dv. 5/1512:09 pm
HMO
-
SEA
1 stop5h 39m
American Airlines
Deal found 1/14$635
This American Airlines deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 4/302:57 pm
SEA
-
HMO
1 stop20h 32m
American Airlines
dg. 5/312:09 pm
HMO
-
SEA
1 stop5h 39m
American Airlines
Deal found 1/14$744
This Aeromexico deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dc. 5/611:45 am
SEA
-
HMO
2 stops20h 28m
Aeromexico
dv. 5/159:17 am
HMO
-
SEA
1 stop10h 43m
Aeromexico
Deal found 1/14$846
This Aeromexico deal was found by Cheapflights users on 1/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 4/309:30 am
SEA
-
HMO
1 stop14h 09m
Aeromexico
dg. 5/36:41 pm
HMO
-
SEA
2 stops29h 17m
Aeromexico
Deal found 1/14$938
This Aeromexico deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dj. 2/267:25 am
SEA
-
HMO
2 stops14h 34m
Aeromexico
dg. 3/17:46 pm
HMO
-
SEA
2 stops24h 03m
Aeromexico
Deal found 1/15$1,055
This Aeromexico deal was found by Cheapflights users on 1/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Aeromexico is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dl. 2/239:34 am
SEA
-
HMO
1 stop12h 25m
Aeromexico
dc. 2/259:09 am
HMO
-
SEA
1 stop11h 47m
Aeromexico
Deal found 1/13$1,191

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Hermosillo that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated gener 15, 2026.
Use the filters below to find and compare flights from Seattle to Hermosillo that are best for you.

Fly from

Seattle

Fly to

Hermosillo

Route

Depart

Return

Price

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 2/26

10:00 pm-7:45 am

1 stop8h 45m

Hermosillo Gen Pesqueira Garcia

dg. 3/1

8:26 am-7:48 pm

1 stop12h 22m

$433

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 2/26

9:28 am-7:45 am

2 stops21h 17m

Hermosillo Gen Pesqueira Garcia

dg. 3/1

9:45 am-7:48 pm

1 stop11h 03m

$484

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dc. 5/6

6:30 am-11:29 am

1 stop4h 59m

Hermosillo Gen Pesqueira Garcia

dv. 5/15

12:09 pm-5:48 pm

1 stop5h 39m

$635

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 4/30

2:57 pm-11:29 am

1 stop20h 32m

Hermosillo Gen Pesqueira Garcia

dg. 5/3

12:09 pm-5:48 pm

1 stop5h 39m

$744

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dc. 5/6

11:45 am-8:13 am

2 stops20h 28m

Hermosillo Gen Pesqueira Garcia

dv. 5/15

9:17 am-8:00 pm

1 stop10h 43m

$846

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 4/30

9:30 am-11:39 pm

1 stop14h 09m

Hermosillo Gen Pesqueira Garcia

dg. 5/3

6:41 pm-11:58 pm

2 stops29h 17m

$938

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 2/26

7:25 am-10:59 pm

2 stops14h 34m

Hermosillo Gen Pesqueira Garcia

dg. 3/1

7:46 pm-6:49 pm

2 stops24h 03m

$1,055

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 3/5

3:00 pm-12:26 pm

1 stop20h 26m

$380

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 3/5

10:05 am-7:55 am

2 stops20h 50m

$455

SeattleHermosillo

SEA - HMO

SEAHMO

Seattle/Tacoma Intl

dj. 3/5

7:25 am-10:59 pm

2 stops14h 34m

$612

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Compare providers for flights from Seattle to Hermosillo

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Hermosillo in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Hermosillo flights, users find the pricing of Mytrip to be most consistent on Cheapflights vs. Mytrip Users can find the same prices on Seattle-Hermosillo flight deals on Cheapflights vs. Mytrip >95% of the time. Price accuracy is based on data collected from Seattle-Hermosillo flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Hermosillo flights, Cheapflights users trust Mytrip the most. Mytrip has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Hermosillo flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Seattle to Hermosillo

Have a flexible travel schedule? Discover the best time to fly to Hermosillo from Seattle with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Seattle to Hermosillo

How much does it cost to fly round-trip from Seattle to Hermosillo?

Reviews of airlines servicing Hermosillo

Get insights into the airlines that provide service to Hermosillo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Hermosillo. Reviews last updated gener 15, 2026.
Peruse reviews from past customers who have flown with American Airlines from Seattle to Hermosillo to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,129 reviews

Crew

8.0

Overall

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.
American Airlines
7.2
Good
11,129 reviews
American Airlines
7.2
Good
11,129 reviews

Crew

8.0

Overall

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

Comfort

7.2

Reviews

1 / 20
2.0
Mediocre

Susie,Jan 2026

CLT - TPA

This flight was delayed 3 or 4 times. We had boarded the plane, sat on plane for a good 30 minutes, then we had to board the aircraft, walk to a different gate, wait and then board another aircraft. We arrived in Tampa 4 hours later than the original booking. I feel there should have been some sort of compensation especially for the advantage members.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Hermosillo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Seattle to Hermosillo?

    Volaris, American Airlines, and Aeromexico can get you from Seattle to Hermosillo in just under 4h 59m. Your travel time can differ by up to 15h 29m. The distance from Seattle to Hermosillo is about 1403 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Seattle to Hermosillo round-trip?

    Cheapflights users have booked flights from Seattle to Hermosillo round-trip from $554. American Airlines is priced at 18% lower than the current average price of a flight leaving 3 months from now.

  • Can I find deals for flights from Seattle to Hermosillo that include hotel bookings?

    Yes. In addition to deals on Seattle to Hermosillo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Seattle to Hermosillo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Hermosillo.

  • Can I find deals for business class flights from Seattle to Hermosillo?

    Yes. Cheapflights offers flight deals from Seattle to Hermosillo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Hermosillo?

Book flights to Hermosillo if you plan to visit one of these locations
San Carlos

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Seattle to Hermosillo

See prices for flight routes from nearby airports that may be better suited for you.
Portland to Hermosillo flights
Spokane to Hermosillo flights
Spokane to Ciudad Obregón flights

Top airline flying from Seattle to Hermosillo

Discover the top airline that operate flights from Seattle to Hermosillo. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated gener 15, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$554Average$585FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.