Cheap Flights to Washington County from $28

View $28 flight on Sat, May 2, 2026Opens in a new window

Popular airlines to Washington County

  • Alaska Airlines

  • Delta

  • American Airlines

  • United

  • Southwest Airlines

  • Frontier Airlines

  • Sun Country Airlines

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How much is the cheapest flight to Washington County?

Prices were available within the past 7 days and start at $28 for one-way flights and $61 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Apr 30 - Sat, May 2
DEN
Denver
PDX
Portland
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Denver to Portland, returning Sat, May 2, priced at $61 found 1 hour ago
Frontier Airlines
Sun, May 3 - Sun, May 10
DEN
Denver
PDX
Portland
$66 Roundtrip, just found
$66
Roundtrip
just found
Select Frontier Airlines flight, departing Sun, May 3 from Denver to Portland, returning Sun, May 10, priced at $66 just found
Frontier Airlines
Thu, Apr 30 - Sun, May 10
DEN
Denver
PDX
Portland
$76 Roundtrip, found 10 hours ago
$76
Roundtrip
found 10 hours ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Denver to Portland, returning Sun, May 10, priced at $76 found 10 hours ago
Frontier Airlines
Thu, Apr 30 - Thu, May 14
LAX
Los Angeles
PDX
Portland
$80 Roundtrip, just found
$80
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Apr 30 from Los Angeles to Portland, returning Thu, May 14, priced at $80 just found
Alaska Airlines
Wed, May 27 - Wed, May 27
SFO
San Francisco
PDX
Portland
$112 Roundtrip, found 15 hours ago
$112
Roundtrip
found 15 hours ago
Select Alaska Airlines flight, departing Wed, May 27 from San Francisco to Portland, returning Wed, May 27, priced at $112 found 15 hours ago
United
Tue, Jun 23 - Wed, Jul 1
SFO
San Francisco
PDX
Portland
$117 Roundtrip, found 7 hours ago
$117
Roundtrip
found 7 hours ago
Select United flight, departing Tue, Jun 23 from San Francisco to Portland, returning Wed, Jul 1, priced at $117 found 7 hours ago
Delta
Tue, Jun 23 - Tue, Jun 30
SFO
San Francisco
PDX
Portland
$137 Roundtrip, found 9 hours ago
$137
Roundtrip
found 9 hours ago
Select Delta flight, departing Tue, Jun 23 from San Francisco to Portland, returning Tue, Jun 30, priced at $137 found 9 hours ago
Frontier Airlines
Fri, May 8 - Mon, May 11
ONT
Ontario
PDX
Portland
$140 Roundtrip, just found
$140
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, May 8 from Ontario to Portland, returning Mon, May 11, priced at $140 just found
Southwest Airlines
Tue, Jun 23 - Wed, Jul 1
SFO
San Francisco
PDX
Portland
$151 Roundtrip, found 7 hours ago
$151
Roundtrip
found 7 hours ago
Select Southwest Airlines flight, departing Tue, Jun 23 from San Francisco to Portland, returning Wed, Jul 1, priced at $151 found 7 hours ago
Frontier Airlines
Thu, May 7 - Sun, May 10
PHX
Phoenix
PDX
Portland
$160 Roundtrip, found 1 hour ago
$160
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, May 7 from Phoenix to Portland, returning Sun, May 10, priced at $160 found 1 hour ago

Airports in Washington County

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. PDX. Cheapest option available. Flights from $687
PDX
Portland Intl.
Cheapest
Flights from $687

Trending flights to Washington County

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Apr 30 - Sat, May 2
DEN
Denver
PDX
Portland
$61 Roundtrip, found 1 hour ago
$61
Roundtrip
found 1 hour ago
Select Frontier Airlines flight, departing Thu, Apr 30 from Denver to Portland, returning Sat, May 2, priced at $61 found 1 hour ago

Frequently asked questions

How do I find cheap flights to Washington County that have flexible change policies?
When it comes to traveling these days, flexibility is a must. That's why we've added a "No change fee" search function to help you locate flexible, low-priced fares to Washington County. It's at the top left of your screen just below the "Flexible change policies" subheading.
Which airlines fly to Washington County?
With a good range of airlines offering flights into or near Washington County, the choice is yours:

  • Alaska Airlines - 2,614 flights to or near Washington County each month, including 2,614 flights to Portland Intl. Airport (PDX) per month.
  • Delta Air Lines - 814 flights to or near Washington County each month, including 814 flights to Portland Intl. Airport (PDX) per month.
  • Southwest Airlines - 784 flights to or near Washington County each month, including 784 flights to Portland Intl. Airport (PDX) per month.

How can I find cheap tickets to Washington County?
An excellent strategy for scoring cheap tickets is to be flexible with your travel dates. Begin with searching for your flight to Washington County, then click on the "flexible dates" link to see prices for nearby days. Another helpful hint? Book well ahead of time. For an idea of costs, $61 was the best price for a flight to Washington County in the last seven days.
How much is a flight to Washington County?
You could have nabbed a return air ticket to Washington County from anywhere between $61 and $160 in the last seven days. For one-way journeys leaving from Denver (DEN), the lowest amount paid during this period was just $28.
What are the most popular airports to fly into in Washington County?
Jet into Portland Intl. Airport (PDX) and sample the best that Washington County has to offer. As the region's main entry point, around 5,648 flights land here every month.
When is the cheapest time to fly to Washington County?
Leave for Washington County early in the week and you'll usually be rewarded with lower fares. Tuesday is generally the cheapest day to jet off, closely followed by Monday. If you're eager to avoid the priciest flights, steer clear of Saturdays.
How much is a plane ticket to Washington County?
In the last seven days, tickets to Washington County varied between $61 and $160. Prices generally depend on the time of departure, airline, cabin class and how early the fare is booked.
What months are the cheapest to book a flight to Washington County?
To snap up a bargain flight to Washington County, try to book during February when ticket prices are at their cheapest. When do tickets cost the most? In the U.S, it's the month of December.
How long is a flight to Washington County?
It could take you an hour or two or longer — it really depends on which part of the States you're flying from. The average flight times for these in-demand domestic routes to Washington County will give you a clearer idea of what you can expect:

  • Seattle, WA (SEA-Seattle - Tacoma Intl.) to Portland Intl. Airport (PDX) - 1 hour
  • Los Angeles, CA (LAX-Los Angeles Intl.) to Portland Intl. Airport (PDX) - 2 hours and 24 minutes
  • San Francisco, CA (SFO-San Francisco Intl.) to Portland Intl. Airport (PDX) - 1 hour and 46 minutes

What is the best time to go to Washington County?
Hillsboro, Washington County's most populous city, is a terrific destination to explore at anytime. Don't like the cold? Then venture here from June 20 onward in summer, when average temperatures range from 55ºF to 80ºF. March, May and June is when Hillsboro draws the biggest crowds.

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*Flight schedules are subject to change.

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*Flight schedules are subject to change.

*Available to One Key members.

 

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