$172 Cheap Flights from Pittsburgh (PIT) to Seattle (SEA)

Pittsburgh (PIT) to Seattle (SEA) at a glance

Travel from Pittsburgh International Airport (PIT) to Seattle-Tacoma International Airport (SEA) with a range of airlines offering competitive options. Whether you're looking for budget-friendly fares or full-service flights, you can easily compare choices to suit your travel plans and budget. Discover essential information on flight times and details for flights from Pittsburgh to Seattle as you prepare to explore the iconic sights and vibrant neighborhoods of Seattle.

• Fastest flight duration: around 5h 15m non-stop
• Route distance: roughly 2,100 miles (3,380 km)
• Flights per week: around 25+ flights with multiple daily departures on average
• Typical fares (one-way): economy tickets often range from $90–$370, depending on seasonality and how far ahead you book

Flights from Pittsburgh International Airport (PIT) to Seattle - Tacoma International Airport (SEA)

Based on the latest traveler bookings, here are the top airlines favored for flights from Pittsburgh to Seattle, including both non-stop and one-stop options. Popular layover choices include O'Hare International Airport (ORD) with an approximately 1-hour 15-minute layover, Denver International Airport (DEN), and Midway International Airport (MDW), both also featuring about 1-hour 15-minute layovers. This variety allows you to balance price, total travel time, and cabin class to discover the ideal travel itinerary.

• Alaska Airlines: This full-service airline provides both non-stop and one-stop flights, with one-way fares generally falling between $115 and $440. It represents about 28% of departures on this route, offering a typical non-stop flight duration of 5 hours and 15 minutes.
• American Airlines: A full-service airline that offers one-stop flights, American Airlines typically has one-way fares ranging from $90 to $295. It accounts for approximately 19% of departures on this route, with an in-flight duration of 6 hours and 30 minutes, leading to a total trip time of around 8 hours (including layover).
• United: This full-service carrier offers both non-stop and one-stop services, with one-way fares usually priced between $120 and $380. United makes up about 19% of departures on this route, featuring a standard one-stop flight time of 6 hours and 30 minutes, resulting in a total travel duration of approximately 8 hours.
• Delta: As a full-service airline providing one-stop flights, Delta's one-way fares typically range from $100 to $330. It constitutes around 18% of departures on this route, with an in-flight time of 6 hours and 30 minutes and an overall journey time of about 8 hours (including layover).
• Southwest Airlines: Known as a low-cost carrier, Southwest offers one-stop and multi-stop options, with one-way fares usually spanning from $90 to $380. It accounts for roughly 13% of departures on this route, with a standard one-stop flight taking 6 hours and 30 minutes, leading to a total travel time of about 8 hours.

Travelers flying from Pittsburgh to Seattle have the option to enhance their journey with upgraded services. Alaska Airlines provides first class and business class, while Delta features first class and premium economy, and United offers first class seating.

Best time to fly from Pittsburgh (PIT) to Seattle (SEA)

The most popular months for travelers flying from Pittsburgh to Seattle are March, July, and August, when peak temperatures in Seattle reach up to 67.5°F in August. If you prefer quieter travel, consider October, the least busy time to visit with temperatures around 52.7°F and typically the lowest average one-way fare (around $189). Flight availability peaks in July, with approximately 44 flights per week, making it easier to find convenient departure times. February has the fewest flights, with approximately 21 flights per week.

• Cheapest time to fly: October usually offers good deals with average one-way fare around $189, roughly 11% cheaper than the yearly average.
• More budget-friendly months to fly: February, November, and April typically offer average one-way fares of around $200.
• Most flight options: July has the highest number of flights from Pittsburgh to Seattle, with approximately 44 flights per week, giving you more flexibility in scheduling your trip.

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Pittsburgh (PIT) to Seattle (SEA)

• Pittsburgh to Renton (PIT-RNT): Renton Municipal Airport (RNT) is located approximately 5 miles from Seattle - Tacoma International Airport (SEA).
• Pittsburgh to Seattle (PIT-BFI): Boeing Field Airport (BFI) can be found about 6 miles from Seattle - Tacoma International Airport (SEA).
• Pittsburgh to Seattle (AGC-SEA): Allegheny County Airport (AGC) lies roughly 20 miles from Pittsburgh International Airport (PIT).

How to find the best prices for flights from Pittsburgh (PIT) to Seattle (SEA)

Getting some of the best deals on flights from Pittsburgh to Seattle is all about timing and flexibility. Here are some key tips to help you save:

1. Best times to book and fly: cheaper fares are usually found when booking 2-8 weeks in advance, which is when most travelers make their reservations. Afternoon departures (12pm-6pm) often offer lower prices, while evening flights (6pm-12am) are more popular. Additionally, flying on Sunday tends to be cheaper, although Friday remains the most sought-after travel day.
2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Seattle - Tacoma International Airport from Pittsburgh International Airport

Seattle welcomes travelers from Pittsburgh with a range of transport options based on price, convenience, and proximity. Seattle city center is approximately a 20-minute drive (covering about 14 miles) from Seattle - Tacoma International Airport, depending on traffic. Here's how to reach Seattle efficiently:

• Hotel transfer: Transfers offer a convenient way to reach your hotel in Seattle, with private rides that can be arranged in advance.
• Car rental: Renting a car from Seattle - Tacoma International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Seattle - Tacoma International Airport on Expedia.
• Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
• Public transportation: From Seattle - Tacoma International Airport, SeaTac/Airport Station, a metro station, is located about 0.3 miles from the airport and can be reached on foot, while Tukwila Station, a train station, is situated about 4.3 miles away and is typically accessed by car.

Pittsburgh to Seattle Flights

The cheapest times to fly from Pittsburgh to Seattle

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 Pittsburgh to Seattle are during the month of December. You can find some of the cheapest flights from Pittsburgh to Seattle with Expedia's search tool and vast selection of airlines.

The best time to book a flight from Pittsburgh to Seattle

Sunday is one of the best days to book for cheap flights from Pittsburgh to Seattle: 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 Pittsburgh to Seattle

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 Pittsburgh to Seattle in 2026. You can also book with separate airlines for your outbound and return journeys, from $172 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 Pittsburgh to Seattle 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 Pittsburgh to Seattle 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.