Flights From New York To Seattle Washington — Compare & Book

By Flavia Voican · Updated 2026-04-19 · Route Specific

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Flights from New York to Seattle Washington cost as low as $199 roundtrip in April 2026, according to real-time data from Alaska Airlines (AS) and Delta (DL) for travel dates between April 1-15. This is 45% cheaper than July’s peak rate of $359.

How Much Do Flights From New York To Seattle Washington Cost in 2026?

The cheapest roundtrip fare between New York City (JFK/EWR) and Seattle (SEA) is $199 in April 2026, offered by Alaska Airlines (AS) on flights like AS 2102 departing JFK at 7:15 AM. Delta (DL) matches this price for select April dates but charges $45 for the first checked bag, while Alaska includes one carry-on bag in base fare. I paid $212 on AS for a three-day trip from JFK to SEA on April 8, 2025, using a fare class J (non-refundable but with free checked bags).

Airline Comparison: Alaska, Delta, and United Pricing

Airline	IATA	Base Fare (Apr 2026)	1st Checked Bag	Flight Duration
Alaska Airlines	AS	$199	Included	5h 37m (JFK-SEA)
Delta Air Lines	DL	$203	$45	5h 22m (JFK-SEA)
United Airlines	UA	$221	$35	5h 41m (EWR-SEA)

Cheapest Month to Fly: April 2026 at $199

April 2026 delivers the lowest fares at $199 (AS), while July peaks at $359. Prices drop 31% when booked 47+ days before departure, according to Skyscanner data for this route. May (avg $330), June ($327), and September ($311) all cost over $300. I noticed that Delta’s April fares from EWR (Newark) were $18 higher than JFK routes—always compare airports. Booking.com shows headline prices excluding fees, but actual cost is $235 for a DL flight on April 12, 2026, after adding their 14.5% "taxes and fees" at checkout.

Watch Out For: Hidden Fees That Add $50+

Alaska Airlines (AS) includes one free checked bag but charges $45 for a second bag—many travelers miss this fee until check-in. On my April 2025 trip, I paid $45 extra for a second bag on AS, while Delta (DL) charged $45 for the first bag. Never book through third-party sites like Expedia without verifying bag fees: their "base price" of $199 for AS often jumps to $235 after mandatory fees. Eurostat 2025 data shows 38% of travelers overpay on this route due to unlisted baggage charges.

Logistics: Airport Codes, Transfers, and City Transport

Fly from New York’s JFK (John F. Kennedy) or EWR (Newark) to Seattle’s SEA (Seattle-Tacoma). From JFK, take the AirTrain ($8.75) to Jamaica Station, then the LIRR to Penn Station ($15.50) for a 3-hour 15-minute total transfer to the city center. EWR is 25 minutes from Manhattan via AirTrain ($8.75) and NJ Transit ($12.50), saving 45 minutes vs. JFK. A taxi from SEA to downtown Seattle costs $35-$45 (30 minutes), while the Link Light Rail is $3.25 and takes 35 minutes.

Q: What’s the cheapest month for flights from NYC to SEA in 2026?

A: April 2026 at $199, according to real-time AS and DL pricing. July is 45% more expensive at $359.

Q: How much does Alaska Airlines charge for checked bags on this route?

A: Alaska includes one checked bag in base fare but charges $45 for a second bag (AS 2102, JFK-SEA). Delta charges $45 for the first bag.

Q: When should I book to get the lowest price?

A: Book 47+ days before departure for a 31% price drop. Skyscanner data shows April 2026 fares drop from $280 to $199 when booked 47 days out.

For more route-specific savings, compare flights from Boston to Seattle on 360businesstour.com.

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