Main Cabin Extra offers early boarding and complimentary drinks, ideal for longer flights.
Download the American Airlines app for in-flight entertainment on domestic flights without seatback screens.
Planning a trip from Philadelphia to Seattle? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.
When planning a trip from Philadelphia to Seattle, there are several ways to potentially save money on your flight. Generally, the cheapest day of the week to fly is Wednesday, and the cheapest month to fly is October.
Day Selection: Opt for a Wednesday flight for the best rates.
Month Selection: Consider flying in October to save on airfare.
Booking Time: Book your flight at least 45 days in advance for the best prices.
Airline Choice: Frontier Airlines generally offers the cheapest flights for this route.
Flight Type: Direct flights are typically cheaper than those with a layover.
This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK.
Low season | January |
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High season | August |
Cheapest flight | $84 |
Direct departures
Philadelphia to Seattle/Tacoma Intl
Monday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Tuesday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Wednesday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Thursday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Friday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Saturday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Sunday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Direct returns
Seattle/Tacoma Intl to Philadelphia
Monday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Tuesday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Wednesday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Thursday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Friday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Saturday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Sunday
Air Tahiti Nui, Alaska Airlines, American Airlines, +3 more
Air Tahiti Nui, Alaska Airlines, +4 more
2
3
Would have been nice if my flight was on time and I didn't miss my connection and had to spend the night in Seattle, losing one night at the VRBO I paid for in Sitka. And, my connecting flight was still at the gate when my flight was taxiing to it's gate. But, it took off. Too bad for me. I really can't believe you even want me to review or comment on my experience.
Would have been nice if my flight was on time and I didn't miss my connection and had to spend the night in Seattle, losing one night at the VRBO I paid for in Sitka. And, my connecting flight was still at the gate when my flight was taxiing to it's gate. But, it took off. Too bad for me. I really can't believe you even want me to review or comment on my experience.
Upon arrival I was disappointed that the assist I requested to get to the baggage claim wasn't provided. The entire baggage area was not clearly marked and I wanted to store my baggage overnight, that wasn't available. I had to take it on the shuttle to the hotel!
The staff was extremely pleasant, and the ride was uneventful… If I were going to a place they serviced, I would take Alaska again
Everything was great. Paid for upgraded economy seat and it was worth it: early boarding, roomy seat, great entertainment choices, free drink!
Horrible. Boarded late, sat on the tarmac for over an hour, missed my connecting flight and had to spend a day in the Seattle airport. I won’t be flying Hawaiian again.
I have mobility problems and requested wheelchair assistance in Seattle and Anchorage and none was provided at all. Very disappointed. Only one gate agent in Seattle asked if I needed assistance boarding my flight in Seattle.... and only after three gate changes.... requiring even more extremely painful walking without assistance.
All airlines seem to be a scam with having to pay force assignment, baggage fees, and completely garbage food. Our flight attendants now seem to have a power trip complex. It’s clear they know we have no other choice if we want to travel so they don’t care and let you know it.
Overall it was good. There was a delay in departure, which is why I did not rate it as excellent.
Seats hurt and can't recline far enough no screens in the back of the seats food or snacks not good
Both flights delayed while the crew blamed it on local festivities instead of the truth of not having enough staff.
On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.
The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!
I believe that a four-hour trip should have a meal. Delta had none.
Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!
I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.
There was supposed to be a meal served, but there wasn’t and the major toilet was out of order
They made us board and then deboard due to mechanical issue which delayed the departure by almost 2 hours and we barely made our connecting flight. These quality checks should've been done before boarding not after.
Having to up charge for a seat assignment is not good. Delta can do better
I liked the friendliness of the staff. The cleanliness of all 3 planes.
Was charged for my luggage despite having been on one ticket from an international flight. Too tired to argue after 15 hours on flight. Was charged for rechecking it at JFK airport. Not sure why those off Kenya Airways were required to do that.
The flight was great! The flight attendants were friendly and attentive. I would definitely fly Hawaiian Aurlines again!
You have to buy the ear buds and they only offers little cup of water twice.
Boarding area in Seattle was super busy and tight due to the layout.
The flight was very smooth and the landing was AMAZING! I have flight anxiety and it didnt peak once! :) Thank you to the pilots and crew!!
Boarding was confusing. Why are families so special that they get to board first? They and their stupid kids take up all the space in the overhead compartments. Then I get stuck having to gate check a bag when I've gone to a lot of trouble to pack efficiently to AVOID checking luggage.
Pillows and blankets were nice since it was an overnight flight, but the seats should be larger and there should be more space between rows so we have more leg room.
service overall good. I thought paying for wi-fi in first class was tacky. Food was soggy.
Crews were very friendly and the flight was comfortable. WiFi option was great.
My flight was unexpectedly rescheduled to three days after the intended departure date about seven hours before the flight, ruining my plans and vacation. Moreover, I was forced to cancel my return flight as well, losing about $400 dollars in the process.
Flight was on time, crew was friendly and prompt with the service. The only thing that could be improved is the seat space, but that's wishful thinking
Plane was delayed for 6 hours, at first by weather, which is understandable, but was further delayed with NO given reason for 2 1/2 hours more. We had no clue when we were going to depart actually until they opened the ramp. VERY POOR to ZERO COMMUNICATION!!!
Flight was delayed and after being in the airport for like seven hours, it was canceled.
Flight delays numerous times. Everytime we would get close to boarding it would be delayed again. Strung along the entire time.
Overall very good, only complaint I have is the crew from CLT to SAT could have collected trash sooner.
Above and beyond effort from this crew in a tough situation. So helpful and understanding. Thank you!
We started with trouble checking in 24 hours early. Then my husband did not get his TSA precheck. Finally flight delayed due to no crew. I know things happen
Most miserable flight ever. We waited almost 2 hours on the runway because the flight was oversold. American offered $1200 credit. Then there was some nonsense about weight distribution. Ridiculous. No food for 8 plus hours on the flight. I will be writing a letter.
Honestly, I haven’t flown American in years, probably due to the pandemic and my being unable to travel for certain periods in the last two years, but it was a good experience to dig out or obtain a new American Airlines account after many years of traveling for business with American in the past.
It’s a great flight. Service is good. Staff is awesome.
Everything about the flight was lovely…We left early, arrived early, cabin crew were efficient and helpful. Flight was easy and most pleasant.
sluggish boarding and arrival procedures, fake nice flight attendants, and lots of delays.
Disaster. They lied every step of the way. We ended up being delayed due to crew and then allegedly abandoned the flight because of a curfew at LGA. No rebooking to LGA at any reasonable time. No hotel. No meal vouchers. Had to sleep in the airport and fly to Newark instead. Will never fly Frontier again.
What I expected, nickeled and dined and a frontier flight attendant loudly complained about her job and lack of communication as she headed to the gate on her cell phone. Not professional.
As every law enforcement agency I could imagine surrounded the plane and we didn’t disembark for 2 hours and then had to stick around for another hour to go get our personal belongings after leaving them behind and being bused away from the plane, it was scary and inconvenient. We were given no information as to why this was happening. Lack of communication with passengers was disappointing.
After boarding and un-boarding twice over 6+hours, the flight was canceled.
Severe turbulence. Captain never came on to reassure passengers after things settled down.
My first flight was delayed 5 hours. The 2nd flight was canceled til the next day and the never even tried to compensate for it. Worse I was delayed again on the flight the rebooked me on.
Boarding in Orlando was not good. Giant mob at the gate, should have been lines.
Decent clean onboard experience. Okay discount airline experience. Unfortunately, any customer service interactions are difficult and unhelpful. There is no service. Also, a premium seat only gets you premium boarding if you line up first. Once they start general boarding you must go to the back of the line. Not very premium
baggage clamed had to wait over a hour and half for all people on my flight it was terrible
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