Cheap flights from Allentown to Seattle from $189
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Allentown to Seattle departing on 8/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Allentown to Seattle
Cheap round-trip flights
Cheap one-way flights
American Airlines flights from Allentown to Seattle
Our best American Airlines deals on Allentown to Seattle flight tickets
United Airlines flights from Allentown to Seattle
Our best United Airlines deals on Allentown to Seattle flight tickets
See travel insights to Seattle from
How to get the cheapest flight ticket from Allentown to Seattle
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Seattle?
In general, March is the cheapest month to fly from Allentown to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $388. If you don’t want to visit Seattle in March, then you should wait until February to fly from Allentown, when ticket prices are also cheap, with an average price of $408.
What is the cheapest day to depart on your flight to Seattle?
On average, the least expensive day to fly to Seattle from Allentown is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $469. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Monday is the most expensive day to depart from Allentown because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $700.
What is the cheapest time of day to depart on your flight to Seattle?
Flying to Seattle from Allentown in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $535 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $723. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.
How have Allentown to Seattle flight prices changed over time?
As of June 2025, prices for Allentown to Seattle flights are approximately 42% more expensive when compared to flights at the same time last year.
What is the cheapest airline that flies from Allentown-Bethlehem to Seattle/Tacoma Intl?
American Airlines, United Airlines, and Delta are the most popular carriers operating from Allentown-Bethlehem to Seattle/Tacoma Intl
What airlines fly to Seattle?
Alaska Airlines, United Airlines and American Airlines are the top three most popular airlines that fly to Seattle from Allentown according to our data. Alaska Airlines is the first choice among our users, with 38% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 10 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.
When to book flights from Allentown to Seattle
Cheap Allentown to Seattle (ABE to SEA) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Allentown to Seattle
How far is Allentown-Bethlehem to Seattle/Tacoma Intl by plane?
The straight-line distance from Allentown-Bethlehem to Seattle/Tacoma Intl is 2336.4 mi. 7h 52m is a normal flight duration for this route.
When did momondo last update prices for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
Prices for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport refresh daily.
How many operators does momondo search for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
As of June 2025, there are 3 operators available to choose from for flights from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.
How old do you have to be to fly from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Allentown-Bethlehem Airport to Seattle/Tacoma Intl Airport.
What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?
The travel and health documents you'll need for your trip to Seattle/Tacoma Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Allentown to Seattle?
Based on momondo bookings for flights between Allentown and Seattle, the leading airline is American Airlines, making up 59% of the total bookings. Other popular airlines include United Airlines with 32% and Delta with 8%.
Best airlines flying from Allentown to Seattle
Compare and see reviews for airlines that fly from Allentown to Seattle with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $293 | Free Cancellation | Rating 7.4 8,801 reviews | |||
| PriceFrom $328 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $386 | Free Cancellation | Rating 8.0 7,963 reviews |
Traveling to a place near Seattle?
Book flights to Seattle if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Allentown to Seattle?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Allentown to Seattle. momondo saves you time and could save you money on your trip.
Can I find flights from Allentown to Seattle with flexible booking policies on momondo?
All flight searches from Allentown to Seattle on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Allentown to Seattle?
Once you have performed a search for Allentown to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.
I’m not ready to book a flight from Allentown to Seattle right now. Can momondo alert me if prices change?
If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from Allentown and alert you when they change.