Cheap Flights to Washington County from $28

View $28 flight on Fri, Feb 20, 2026Opens in a new window

Popular airlines to Washington County

  • Alaska Airlines

    Alaska Airlines

  • Delta

    Delta

  • American Airlines

    American Airlines

  • United

    United

  • Southwest Airlines

    Southwest Airlines

  • Frontier Airlines

    Frontier Airlines

  • Air Canada

    Air Canada

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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 $56 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Jan 29 - Mon, Feb 2
LAS
Las Vegas
PDX
Portland
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 29 from Las Vegas to Portland, returning Mon, Feb 2, priced at $56 just found
Frontier Airlines
Thu, Mar 12 - Fri, Mar 13
LAX
Los Angeles
PDX
Portland
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Mar 12 from Los Angeles to Portland, returning Fri, Mar 13, priced at $56 just found
Frontier Airlines
Fri, Feb 13 - Fri, Feb 20
LAS
Las Vegas
PDX
Portland
$57 Roundtrip, found 2 hours ago
$57
Roundtrip
found 2 hours ago
Select Frontier Airlines flight, departing Fri, Feb 13 from Las Vegas to Portland, returning Fri, Feb 20, priced at $57 found 2 hours ago
Frontier Airlines
Fri, Feb 13 - Mon, Feb 16
LAS
Las Vegas
PDX
Portland
$58 Roundtrip, just found
$58
Roundtrip
just found
Select Frontier Airlines flight, departing Fri, Feb 13 from Las Vegas to Portland, returning Mon, Feb 16, priced at $58 just found
Frontier Airlines
Fri, Feb 27 - Fri, Feb 27
LAS
Las Vegas
PDX
Portland
$61 Roundtrip, found 1 day ago
$61
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Fri, Feb 27 from Las Vegas to Portland, returning Fri, Feb 27, priced at $61 found 1 day ago
Frontier Airlines
Mon, Mar 9 - Mon, Mar 9
PHX
Phoenix
PDX
Portland
$63 Roundtrip, found 21 hours ago
$63
Roundtrip
found 21 hours ago
Select Frontier Airlines flight, departing Mon, Mar 9 from Phoenix to Portland, returning Mon, Mar 9, priced at $63 found 21 hours ago
Alaska Airlines
Sat, Apr 11 - Mon, Apr 13
BUR
Burbank
PDX
Portland
$98 Roundtrip, found 2 days ago
$98
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Sat, Apr 11 from Burbank to Portland, returning Mon, Apr 13, priced at $98 found 2 days ago
Southwest Airlines
Thu, Feb 19 - Mon, Feb 23
LAS
Las Vegas
PDX
Portland
$105 Roundtrip, found 1 hour ago
$105
Roundtrip
found 1 hour ago
Select Southwest Airlines flight, departing Thu, Feb 19 from Las Vegas to Portland, returning Mon, Feb 23, priced at $105 found 1 hour ago
Hawaiian Airlines
Wed, Feb 25 - Wed, Mar 25
BUR
Burbank
PDX
Portland
$117 Roundtrip, found 4 hours ago
$117
Roundtrip
found 4 hours ago
Select Hawaiian Airlines flight, departing Wed, Feb 25 from Burbank to Portland, returning Wed, Mar 25, priced at $117 found 4 hours ago
United
Mon, Feb 2 - Sat, Feb 7
ONT
Ontario
PDX
Portland
$134 Roundtrip, found 6 hours ago
$134
Roundtrip
found 6 hours ago
Select United flight, departing Mon, Feb 2 from Ontario to Portland, returning Sat, Feb 7, priced at $134 found 6 hours 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 $491
PDX
Portland Intl.
Cheapest
Flights from $491

Enjoy extra legroom, flight flexibility, and a seamless travel experience.

Washington County Flights Information

Airlines serving
Frontier Airlines, Southwest Airlines, Alaska Airlines, United, American Airlines, Delta, Hawaiian Airlines
Roundtrip price
from $56

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, $56 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 $56 and $134 in the last seven days. For one-way journeys leaving from Las Vegas (LAS), 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 $56 and $134. 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.

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, Jan 29 - Mon, Feb 2
LAS
Las Vegas
PDX
Portland
$56 Roundtrip, just found
$56
Roundtrip
just found
Select Frontier Airlines flight, departing Thu, Jan 29 from Las Vegas to Portland, returning Mon, Feb 2, priced at $56 just found
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