$403 Cheap Flights from Pasco (PSC) to Oslo (OSL)

View $403 flight on Tue, Oct 7, 2025Opens in a new window

Popular airlines from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL)

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Cheap Flights from Pasco to Oslo (PSC-OSL)

Prices were available within the past 7 days and start at $403 for one-way flights and $627 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Oct 6 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$627 Roundtrip, found 2 days ago
$627
Roundtrip
found 2 days ago
Select United flight, departing Mon, Oct 6 from Pasco to Oslo, returning Tue, Oct 14, priced at $627 found 2 days ago
United
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$631 Roundtrip, found 2 days ago
$631
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $631 found 2 days ago
United
Sun, Oct 5 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$632 Roundtrip, found 2 days ago
$632
Roundtrip
found 2 days ago
Select United flight, departing Sun, Oct 5 from Pasco to Oslo, returning Tue, Oct 14, priced at $632 found 2 days ago
United
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$642 Roundtrip, found 2 days ago
$642
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $642 found 2 days ago
Delta
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$691 Roundtrip, found 2 days ago
$691
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $691 found 2 days ago
Delta
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$692 Roundtrip, found 2 days ago
$692
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $692 found 2 days ago
Delta
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$693 Roundtrip, found 2 days ago
$693
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $693 found 2 days ago
American Airlines
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$722 Roundtrip, found 2 days ago
$722
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $722 found 2 days ago
British Airways
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$723 Roundtrip, found 2 days ago
$723
Roundtrip
found 2 days ago
Select British Airways flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $723 found 2 days ago
Air France
Tue, Oct 7 - Tue, Oct 14
PSC
Pasco
OSL
Oslo
$743 Roundtrip, found 2 days ago
$743
Roundtrip
found 2 days ago
Select Air France flight, departing Tue, Oct 7 from Pasco to Oslo, returning Tue, Oct 14, priced at $743 found 2 days ago
Flights from Pasco (PSC) to Oslo (OSL)
Origin airport
Tri-Cities
Destination airport
Gardermoen
Airlines serving
British Airways, Finnair, Scandinavian Airlines
Roundtrip price
$626
Distance
4567 mi

Pasco to Oslo Flights

The cheapest times to fly from Pasco to Oslo

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Pasco to Oslo are during the month of October. You can find some of the cheapest flights from Pasco to Oslo with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Pasco to Oslo

Sunday is one of the best days to book for cheap flights from Pasco to Oslo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Pasco to Oslo

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Pasco to Oslo in 2025. You can also book with separate airlines for your outbound and return journeys, from $403 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Pasco to Oslo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Pasco to Oslo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL) cost?
Discover the latest flight deals from PSC to OSL by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from PSC to OSL?
The cheapest flights from PSC to OSL are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from PSC to OSL?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from PSC to OSL. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL)?
Nonstop flights from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL) aren't available daily, so you'll need to take a flight with a layover. Explore your options with Expedia's filter tool. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from PSC to OSL?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* However, this can vary based on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL)?
To avoid possible delays on the Tri-Cities Airport (PSC) to Gardermoen Airport (OSL) route, aim to travel before 3 PM. Later departures are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL) last-minute?
Booking your plane ticket from PSC to OSL shortly before your getaway is generally more expensive. However, if you're flexible with your itinerary, you could land a cheap last-minute fare.
Is it cheaper to book a PSC to OSL flight and hotel package?
Opting for a PSC to OSL flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Select from our wide range of stays and then add flights, activities and car rentals to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Tri-Cities Airport (PSC) to Gardermoen Airport (OSL)?
If you reserved your PSC to OSL flight in the last 24 hours, you may be able to modify or cancel it at no cost. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

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*Available to One Key members.