A coastal landscape with a bay, forested hills, and a distant town.

Cheap Flights to Washington County

View AU$124 flight on Sat, 12 Sept 2026Opens in a new window

Popular airlines to Washington County

  • Alaska Airlines

  • United

  • Delta

  • American Airlines

  • Southwest Airlines

  • Frontier Airlines

  • JetBlue Airways

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 35% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheapest Flights to Washington County

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sun, 6 Sept - Fri, 11 Sept
SFO
San Francisco
PDX
Portland
AU$227 Return, found 2 days ago
AU$227
Return
found 2 days ago
Select Alaska Airlines flight, departing Sun, 6 Sept from San Francisco to Portland, returning Fri, 11 Sept, priced at AU$227 found 2 days ago
Delta
Wed, 2 Sept - Sun, 6 Sept
SFO
San Francisco
PDX
Portland
AU$266 Return, found 2 days ago
AU$266
Return
found 2 days ago
Select Delta flight, departing Wed, 2 Sept from San Francisco to Portland, returning Sun, 6 Sept, priced at AU$266 found 2 days ago
United
Sat, 29 Aug - Mon, 31 Aug
SFO
San Francisco
PDX
Portland
AU$285 Return, just found
AU$285
Return
just found
Select United flight, departing Sat, 29 Aug from San Francisco to Portland, returning Mon, 31 Aug, priced at AU$285 just found
Alaska Airlines
Tue, 6 Oct - Tue, 27 Oct
LAX
Los Angeles
PDX
Portland
AU$300 Return, found 19 hours ago
AU$300
Return
found 19 hours ago
Select Alaska Airlines flight, departing Tue, 6 Oct from Los Angeles to Portland, returning Tue, 27 Oct, priced at AU$300 found 19 hours ago
American Airlines
Thu, 10 Sept - Tue, 15 Sept
LAX
Los Angeles
PDX
Portland
AU$320 Return, found 2 days ago
AU$320
Return
found 2 days ago
Select American Airlines flight, departing Thu, 10 Sept from Los Angeles to Portland, returning Tue, 15 Sept, priced at AU$320 found 2 days ago
Air Canada
Fri, 2 Oct - Wed, 7 Oct
YVR
Vancouver
PDX
Portland
AU$434 Return, found 2 days ago
AU$434
Return
found 2 days ago
Select Air Canada flight, departing Fri, 2 Oct from Vancouver to Portland, returning Wed, 7 Oct, priced at AU$434 found 2 days ago
Air Canada
Fri, 7 Aug - Mon, 10 Aug
YVR
Vancouver
PDX
Portland
AU$436 Return, found 14 hours ago
AU$436
Return
found 14 hours ago
Select Air Canada flight, departing Fri, 7 Aug from Vancouver to Portland, returning Mon, 10 Aug, priced at AU$436 found 14 hours ago
WestJet
Fri, 2 Oct - Wed, 7 Oct
YXX
Abbotsford
PDX
Portland
AU$748 Return, found 2 days ago
AU$748
Return
found 2 days ago
Select WestJet flight, departing Fri, 2 Oct from Abbotsford to Portland, returning Wed, 7 Oct, priced at AU$748 found 2 days ago
Alaska Airlines
Thu, 29 Oct - Wed, 11 Nov
SYD
Sydney
PDX
Portland
AU$1,332 Return, found 1 day ago
AU$1,332
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 29 Oct from Sydney to Portland, returning Wed, 11 Nov, priced at AU$1,332 found 1 day ago
United
Wed, 26 Aug - Sun, 11 Oct
MEL
Melbourne
PDX
Portland
AU$1,372 Return, found 1 day ago
AU$1,372
Return
found 1 day ago
Select United flight, departing Wed, 26 Aug from Melbourne to Portland, returning Sun, 11 Oct, priced at AU$1,372 found 1 day ago

Trending flights to Washington County

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

Alaska Airlines
Thu, 29 Oct - Wed, 11 Nov
SYD
Sydney
PDX
Portland
AU$1,332 Return, found 1 day ago
AU$1,332
Return
found 1 day ago
Select Alaska Airlines flight, departing Thu, 29 Oct from Sydney to Portland, returning Wed, 11 Nov, priced at AU$1,332 found 1 day ago

Frequently asked questions

How do I find cheap flights to Washington County that have flexible change policies?
When it comes to travelling 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, AU$227 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 AU$227 and AU$1,372 in the last seven days. For one-way journeys leaving from San Francisco (SFO), the lowest amount paid during this period was just AU$124.
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 AU$227 and AU$1,372. Prices generally depend on the time of departure, airline, cabin class and how early the fare is booked.
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 13ºC to 27ºC. March, May and June is when Hillsboro draws the biggest crowds.
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.

Book with confidence

Washington County Flights

When was the last time you embarked on a grand adventure? Whether it was last month or years ago, there’s never been a better time to start planning your next big trip. Book tickets to Washington County today and get ready to build your travel itinerary, from exploring the area with your family to recharging in the change of scenery. During your stay, visit the must-see attractions, chow down on the local cuisine, and relish in a holiday state of mind. However you decide to spend your upcoming trip, we’re here to make your travel plans easy and affordable.

Book Your Washington County Airfare

At Expedia.com.au, it’s simple to find cheap flights to Washington County that won’t cause your wallet to flinch. Browse through our inventory of Washington County flights and find airfare matching your preferred times and dates. Looking for a red-eye flight or an afternoon departure? Don’t worry, we’ve got you covered. You can even take advantage of our convenient My Scratchpad online feature, which lets you track your search results with ease. No more excuses; book your travel arrangements with us today to make your dream trip a reality.

Washington County Flights

Travel information

Washington County Flights Information

Airlines serving
Alaska Airlines, Delta, United, American Airlines, Air Canada, WestJet
Roundtrip price
from AU$227
Washington County Flights Information

Explore a world of travel with Expedia

*Available to Expedia members.