Flights Sydney (Mascot) → Seattle
As of November 2026, economy flights from Sydney (Mascot) to Seattle have a typical range AUD 7076–13541, median AUD 9104. Full range across all 83 offers: AUD 3017–23578. We found 39% of 83 offers from budget carriers (around AUD 9009) and 61% from full-service carriers (around AUD 9309).
Preview snapshot — prices change. Search for live results.
Data collected by LetsFG's multi-source price checks — every airline and the major booking sites checked for this route. How we collect data →
Best offers by airline: Sydney (Mascot) → Seattle
Based on 83 offers · November 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Sydney (Mascot) → Seattle
Add-on pricing from the cheapest available offer per airline · November 2026 · AUD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Philippine Airlines | — | Included | — |
| Virgin Australia | — | AUD 30 | — |
| Cathay Pacific | — | Included | — |
| ANA | Included | Included | — |
| Qatar Airways | — | Included | — |
| Air Canada | — | AUD 30 | — |
| China Airlines | Included | Included | — |
| Korean Air | Included | Included | — |
| Qantas Airways | — | AUD 51 | — |
| Alaska Airlines | — | AUD 51 | — |
| Asiana Airlines | Included | Included | — |
| United Airlines | — | AUD 51 | — |
| Emirates | Included | Included | — |
| American Airlines | Included | AUD 35 | — |
Fees are estimates from the prices we checked and may not reflect your specific itinerary, booking class, or payment method. Run a live search for exact pricing.
How much do flights from Sydney (Mascot) to Seattle cost?
Based on 83 offers · November 2026
Sydney (Mascot) to Seattle flights ranged from AUD 3017 to AUD 23578 across 83 offers analyzed in November 2026. Two fare clusters detected: budget fares around 14326 and premium fares around 22550 The chart below shows how prices distributed across all 83 offers.
These 83 offers (November 2026) span multiple departure dates and booking windows — your travel dates may fall anywhere in this distribution. Only a live search shows where your specific trip lands.
50% of offers priced between AUD 8000 and AUD 10613
What hidden fees do Sydney (Mascot) to Seattle flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Sydney (Mascot) to Seattle routes. The breakdown below is based on 83 offers analyzed in November 2026.
| Carrier | Avg fee (AUD) | % of base fare |
|---|---|---|
| PR | 15 | 0% |
| VA | 48 | 1% |
| CX | 57 | 1% |
| NH | 0 | 0% |
| QR | 29 | 0% |
| AC | 49 | 1% |
| CI | 15 | 0% |
| KE | 15 | 0% |
| QF | 63 | 1% |
| AS | 56 | 1% |
| OZ | 17 | 0% |
| UA | 65 | 1% |
| EK | 20 | 0% |
| AA | 45 | 0% |
United Airlines: base ~AUD 10548 + fees AUD 65 = ~AUD 10613 total. Emirates: base ~AUD 12752 + fees AUD 20 = ~AUD 12772 total.
United Airlines's AUD 65 ancillary fees narrow the gap with Emirates's lower-fee model — the AUD 2204 base difference shrinks to AUD 2159 after fees. Always compare total cost, not just the advertised base fare.
Estimates based on median total minus average ancillary fee. Actual base fares vary by itinerary.UA charges 4.3x more in ancillary fees than KE on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Sydney (Mascot) to Seattle?
20 airlines flew Sydney (Mascot) to Seattle in this dataset. The route shows a clear split between low-cost and full-service carriers. Knowing the airline isn't enough — the typical fare range below shows how far prices swing on each one. Median and range include all fees we recorded.
| Airline | Offers | Typical range (AUD) | Median (AUD) | Fees (AUD) |
|---|---|---|---|---|
 Philippine Airlines | 1 | — | 3017 | 15 (0%) |
 ASHA | 5 | 6910–7092 | 6910 | n/a |
 Cathay Pacific | 1 | — | 7083 | n/a |
 ANA | 1 | — | 7318 | 0 (0%) |
 Air Canada | 5 | 7731–8976 | 7731 | 49 (1%) |
 Qatar Airways | 2 | 7621–7922 | 7772 | 29 (0%) |
 China Airlines | 1 | — | 7810 | 15 (0%) |
 Cathay Pacific | 3 | 7248–7984 | 7984 | 57 (1%) |
 Delta | 3 | — | 8000 | n/a |
 American | 1 | — | 8629 | n/a |
 Alaska Airlines | 7 | 8801–10488 | 8874 | 56 (1%) |
 Korean Air | 2 | 8769–9249 | 9009 | 15 (0%) |
 Asiana Airlines | 3 | 9309–9375 | 9309 | 17 (0%) |
 Virgin Australia | 7 | 6646–9990 | 9661 | 48 (0%) |
 Qantas | 22 | 8753–13555 | 9735 | 63 (1%) |
 United | 2 | — | 9738 | n/a |
 United Airlines | 8 | 9832–11326 | 10613 | 65 (1%) |
 Emirates | 3 | — | 12772 | 20 (0%) |
 American Airlines | 5 | 20490–23190 | 22392 | 45 (0%) |
 Qantas | 1 | — | 22587 | n/a |
Where do the best Sydney (Mascot) → Seattle prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from meta-search sources, but the cheapest channel shifts by route and date — which is exactly why a live search across all of them wins.
We compare every airline and the major booking sites but never disclose which — that's our edge. Prices are the ones we observed and aren't official data from any platform. Run a live search and we bring you the cheapest, wherever it is.
Key facts: Sydney (Mascot) to Seattle flights
- Sydney (Mascot)–Seattle had 83 offers analyzed. Median price: AUD 9104.
- UA charges 4.3x more in ancillary fees than KE — AUD 65 vs AUD 15 avg per booking.
- The same route priced AUD 5041 apart depending on where it was booked — the lowest median was AUD 7731. We search every airline and the major booking sites at once so you always see that lowest price.
Frequently asked questions
- How much does a flight from Sydney (Mascot) to Seattle cost?
- Based on 83 offers analyzed, Sydney (Mascot) to Seattle flights range from AUD 3017 to AUD 23578, with a median price of AUD 9104. Search for your specific dates →
- What hidden fees should I expect on Sydney (Mascot) to Seattle flights?
- On average, ancillary fees (bags, seat selection) add AUD 50 to the base fare on Sydney (Mascot) to Seattle flights. See itemized fees for your itinerary →
- Which airline is cheapest on Sydney (Mascot) to Seattle including all fees?
- Philippine Airlines has the lowest median fare on Sydney (Mascot) to Seattle at AUD 3017 (median across 1 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Sydney (Mascot)–Seattle flights?
- It depends on your dates — no single site is always cheapest. We search every airline and the major booking sites at once (travel agencies and meta-search included) and surface whichever is lowest; the best median in this snapshot was AUD 7731. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Sydney (Mascot) to Seattle routes?
- Sydney (Mascot) to Seattle has 20 airlines competing, creating a price range from AUD 3017 to AUD 23578 across 83 offers. There are two distinct fare clusters on this route: budget options and premium fares. Find where your trip lands in the distribution →
20 airlines, two price clusters — find which fits your budget
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