$28 Cheap Flights to Kelso, WA

View $28 flight on Sat, May 30, 2026Opens in a new window

Popular airlines to Kelso

How much is the cheapest flight to Kelso?

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
Sat, May 30 - Sun, Jun 7
LAX
Los Angeles
PDX
Portland
$72 Roundtrip, just found
$72
Roundtrip
just found
Select Frontier Airlines flight, departing Sat, May 30 from Los Angeles to Portland, returning Sun, Jun 7, priced at $72 just found
United
Tue, May 12 - Wed, May 13
SFO
San Francisco
PDX
Portland
$137 Roundtrip, just found
$137
Roundtrip
just found
Select United flight, departing Tue, May 12 from San Francisco to Portland, returning Wed, May 13, priced at $137 just found
Delta
Tue, May 12 - Wed, May 13
SFO
San Francisco
PDX
Portland
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Delta flight, departing Tue, May 12 from San Francisco to Portland, returning Wed, May 13, priced at $157 just found
Southwest Airlines
Tue, May 12 - Wed, May 13
SFO
San Francisco
PDX
Portland
$157 Roundtrip, just found
$157
Roundtrip
just found
Select Southwest Airlines flight, departing Tue, May 12 from San Francisco to Portland, returning Wed, May 13, priced at $157 just found
American Airlines
Thu, May 7 - Tue, May 12
CLD
Carlsbad
PDX
Portland
$159 Roundtrip, just found
$159
Roundtrip
just found
Select American Airlines flight, departing Thu, May 7 from Carlsbad to Portland, returning Tue, May 12, priced at $159 just found

Frequently asked questions

What month is the cheapest to fly to Kelso?
The cheapest month to fly to Kelso is May when there's less demand. Off-peak months are often when you'll find cheap fares. To save money, steer clear of flying during school breaks and major holidays.
Which US cities have the cheapest flights to Kelso?
Seattle, Phoenix and Los Angeles typically have cheap flights to Kelso. Keep in mind that prices may vary based on factors like holiday periods, number of stopovers and demand.
Which US cities fly direct to Kelso?
You can fly to Kelso directly from 44 US cities. To find a nonstop journey, use the "Direct flights only" filter when searching for flights to Kelso on Expedia. Then, compare your choices and find the best departure out of any of these cities:

  • Seattle
  • Phoenix
  • Los Angeles
  • Denver
  • San Francisco

How to find a cheap flight to Kelso?
Book in advance to increase your chances of finding cheap flights to Kelso. Also, consider traveling during off-peak months like February and November. If you leave on a Thursday, you'll save an average of 16% compared to those departing on a Sunday.* Save time searching every day and set up a price alert on the Expedia app. We'll update you when fares change.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Kelso?
Although booking in advance is usually the easiest way to save money, don't worry if your Kelso getaway is last minute. You can still find cheap flights to Kelso, especially if your plans have a little leeway. Try switching up your travel dates, looking at different ticket options or departing from another hub.
How far in advance should I book a flight to Kelso?
Secure the travel dates you want and a price you'll love by booking your domestic flight to Kelso up to 28 days in advance. Search for tickets between two and four months ahead if you're traveling to Kelso from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Kelso?
You can save an average of 8% if you purchase tickets on a Sunday instead of Fridays, which tend to be the most expensive day to book.* When it comes to snapping up a cheap flight to Kelso, it's all about timing.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Kelso?
There are 15 airlines that connect Kelso with 57 airports all over the world. The primary gateway to this city is Portland Intl. Airport (PDX). Fly with any of these popular airlines to Kelso:

  • Alaska Airlines
  • Delta Air Lines
  • American Airlines
  • United Airlines

Where do you fly into Kelso?
The main airport to fly to Kelso is Portland Intl. Airport (PDX). You also have the option to touch down at Portland-Hillsboro Airport (HIO) when flying to Kelso.
How far is the airport from central Kelso?
You'll be roughly 40 mi south of central Kelso after arriving at Portland Intl. Airport (PDX).
Can I save money by booking a Kelso trip package?
You could possibly save hundreds of dollars if you choose a Kelso flight and hotel package deal on Expedia. And you'll save yourself hassle by having all your travel arrangements in the same place. Try bundling your flight and hotel with extras such as car rentals and tours for your own customized Kelso vacation.
Can I change or cancel my flight to Kelso?
If you booked your flight to Kelso within the last 24 hours, you can usually change or cancel it for free. After that, extra charges may apply depending on the airline's terms and conditions. To learn more, check out our Customer Service Portal. Remember that some flights are non-refundable, so you may receive a credit toward a future flight in place of a direct refund. When browsing on Expedia, select the "No cancel fee" or "Changes included" filters to find tickets with flexible change policies.

*Flight schedules are subject to change.

*Available to One Key members.

 

Travel information

Destination airport
Portland Intl.
Destination airport IATA code
PDX
Destination city name
Portland
Roundtrip price
$56

Trending flights to Kelso

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
Sat, May 30 - Sat, May 30
LAX
Los Angeles
PDX
Portland
$56 Roundtrip, found 3 hours ago
$56
Roundtrip
found 3 hours ago
Select Frontier Airlines flight, departing Sat, May 30 from Los Angeles to Portland, returning Sat, May 30, priced at $56 found 3 hours ago

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