In terms of precipitation, rainfall in Hyannis ranges from 3.0 - 4.1 inches per month. March is typically the wettest month, when rainfall can reach 4.1 in. June is typically the driest time to visit Hyannis when rainfall is around 3.0 in.

If weather is an important factor for your trip to Hyannis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

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

To save up to 69% on this flight, we recommend booking at least 53 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Seattle to Hyannis from $366 1-2 weeks out and tickets from $579 for flights departing within the next 72 hours.

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

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, January can be a great choice for travel to Hyannis. Flights to Hyannis from Seattle in January are about $352 on average during January, but can be found for as low as $98.

What is the cheapest time of day to fly from SEA to HYA?

When flying from Seattle to Hyannis, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

How can I find direct flights from Seattle to Hyannis?

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

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

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

$816+ Flights from Seattle to Hyannis

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Cheap flight deals from Seattle to Hyannis

Round-trip from	$816 (American Airlines)
Popular in	December
Cheapest in	January
Average price	$413

From Seattle/Tacoma Intl to Hyannis Barnstable

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High demand for flights, 7% potential price rise

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Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in July 2025

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Cheapest flights from Seattle to Hyannis
Explore the most affordable flight options available from Seattle to Hyannis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Thu 8/1411:30 pmSEA - HYA

2 stops10h 43mAmerican Airlines

Mon 8/1812:10 pmHYA - SEA

1 stop10h 23mAmerican Airlines

Deal found 7/30

$816

Thu 8/1411:59 pmSEA - HYA

2 stops17h 28mMultiple Airlines

Mon 8/186:00 amHYA - SEA

3 stops13h 38mMultiple Airlines

Deal found 7/30

$1,497

Best flights from Seattle to Hyannis
Discover carefully curated flight deals from Seattle to Hyannis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Thu 8/1411:30 pmSEA - HYA

2 stops10h 43mAmerican Airlines

Mon 8/1812:10 pmHYA - SEA

1 stop10h 23mAmerican Airlines

Deal found 7/30

$816

Thu 8/1411:59 pmSEA - HYA

2 stops17h 28mMultiple Airlines

Mon 8/186:00 amHYA - SEA

3 stops13h 38mMultiple Airlines

Deal found 7/30

$1,497

Last-minute flights from Seattle to Hyannis
Discover last-minute flight deals from Seattle to Hyannis. Data last updated July 30, 2025 and is based on user searches.

Thu 8/1411:30 pmSEA - HYA

2 stops10h 43mAmerican Airlines

Mon 8/1812:10 pmHYA - SEA

1 stop10h 23mAmerican Airlines

Deal found 7/30

$816

Thu 8/1411:59 pmSEA - HYA

2 stops17h 28mMultiple Airlines

Mon 8/186:00 amHYA - SEA

3 stops13h 38mMultiple Airlines

Deal found 7/30

$1,497

Fly from

Fly to

Route

Depart

Return

Price

SeattleHyannis

SEA - HYA

SEAHYA

Seattle/Tacoma Intl

Thu 8/14

11:30 pm-1:13 pm

2 stops10h 43m

Hyannis Barnstable

Mon 8/18

12:10 pm-7:33 pm

1 stop10h 23m

$816

SeattleHyannis

SEA - HYA

SEAHYA

Seattle/Tacoma Intl

Thu 8/14

11:59 pm-8:27 pm

2 stops17h 28m

Hyannis Barnstable

Mon 8/18

6:00 am-4:38 pm

3 stops13h 38m

$1,497

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Seattle to Hyannis

Have a flexible travel schedule? Discover the best time to fly to Hyannis 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.

Reviews of airlines servicing Hyannis

See what other customers who have flown with American Airlines from Seattle to Hyannis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

American Airlines

7.2

Good

10,000 reviews

American Airlines

7.2

Good

10,000 reviews

Reviews

1 / 20

2.0

Mediocre

Andrew,May 2025

LAX - MIA

Related info for your journey

Can I find deals for flights from Seattle to Hyannis that include hotel bookings?
Yes. In addition to deals on Seattle to Hyannis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Seattle to Hyannis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Seattle to Hyannis.
Can I find deals for business class flights from Seattle to Hyannis?
Yes. Cheapflights offers flight deals from Seattle to Hyannis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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$816+ Cheap flights from Seattle to Hyannis (SEA - HYA)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/14. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Seattle to Hyannis with Cheapflights

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Cheap flight deals from Seattle to Hyannis

Round-trip from

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Find flight deals from Seattle to Hyannis

Cheapest flights from Seattle to HyannisExplore the most affordable flight options available from Seattle to Hyannis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from Seattle to Hyannis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Seattle to Hyannis that are best for you.

Best time to book a flight from Seattle to Hyannis

Have a flexible travel schedule? Discover the best time to fly to Hyannis from Seattle with our price prediction graph.

Reviews of airlines servicing Hyannis

See what other customers who have flown with American Airlines from Seattle to Hyannis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

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

How can I find direct flights from Seattle to Hyannis?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seattle to Hyannis

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Cheapest flights from Seattle to Hyannis
Explore the most affordable flight options available from Seattle to Hyannis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.