Flights Boston → Seoul
As of July 2026, economy flights from Boston to Seoul have a typical range USD 1549–2191, median USD 2068. Full range across all 277 offers: USD 1067–2664. We analyzed 277 offers from 17 airlines in a single price check.
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: Boston → Seoul
Based on 277 offers · July 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Boston → Seoul
Add-on pricing from the cheapest available offer per airline · July 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| JetBlue | Included | USD 134 | — |
| Porter Airlines | — | Included | — |
| Frontier | Included | — | — |
| Cathay Pacific | Included | USD 68 | — |
| Japan Airlines | Included | — | — |
| Alaska Airlines | Included | Included | — |
| American Airlines | Included | USD 150 | — |
| Air Canada | Included | Included | — |
| Korean Air | Included | USD 68 | — |
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 Boston to Seoul cost?
Based on 277 offers · July 2026
Boston to Seoul flights ranged from USD 1067 to USD 2664 across 277 offers analyzed in July 2026. The chart below shows how prices distributed across all 277 offers.
These 277 offers (July 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 USD 1758 and USD 2126
What hidden fees do Boston to Seoul flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Boston to Seoul routes. The breakdown below is based on 277 offers analyzed in July 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| B6 | 45 | 2% |
| PD | 10 | 1% |
| F9 | 10 | 0% |
| CX | 71 | 4% |
| JL | 0 | 0% |
| AS | 44 | 2% |
| AA | 40 | 2% |
| AC | 12 | 1% |
| KE | 49 | 2% |
Cathay Pacific: base ~USD 1909 + fees USD 71 = ~USD 1980 total. Frontier Airlines: base ~USD 2108 + fees USD 10 = ~USD 2118 total.
Cathay Pacific's USD 71 ancillary fees narrow the gap with Frontier Airlines's lower-fee model — the USD 199 base difference shrinks to USD 138 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.Fee levels vary significantly across carriers on this route — some carriers charge 50%+ above the base fare in ancillary fees.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Boston to Seoul?
17 airlines flew Boston to Seoul in this dataset. 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.
Even on the cheapest airline (Porter Airlines), fares ranged USD 1196–1197 in this snapshot. Your exact price depends on your dates and how far ahead you book — run a live search to see your number →
| Airline | Offers | Typical range (USD) | Median (USD) | Fees (USD) |
|---|---|---|---|---|
 Porter Airlines | 2 | 1196–1197 | 1197 | 10 (1%) |
 Japan Airlines | 18 | 1411–1790 | 1684 | 0 (0%) |
 American | 2 | — | 1687 | n/a |
 China Eastern | 8 | 1561–2052 | 1704 | n/a |
 Alaska Airlines | 6 | 1416–2216 | 1753 | 44 (3%) |
 AS-BR | 8 | 1619–2110 | 1762 | n/a |
 American Airlines | 33 | 1687–2143 | 1888 | 40 (2%) |
 Cathay Pacific | 31 | 1583–2183 | 1980 | 71 (4%) |
 B6 | 111 | 1395–2138 | 2106 | 45 (2%) |
 Frontier Airlines | 28 | 2005–2126 | 2118 | 10 (0%) |
 B6-OZ | 5 | 2126–2269 | 2202 | n/a |
 AA-OZ | 5 | 2126–2269 | 2202 | n/a |
 DL-OZ | 5 | 2126–2269 | 2202 | n/a |
 Air Canada | 6 | 2217–2276 | 2226 | 12 (1%) |
 Korean Air | 7 | 2169–2455 | 2245 | 49 (2%) |
 United | 1 | — | 2339 | n/a |
 Korean Air | 1 | — | 2662 | n/a |
Where do the best Boston → Seoul prices come from?
We checked direct airlines, travel agencies, and meta-search for this route. On this route the lowest median came from travel agency 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: Boston to Seoul flights
- Full-service carriers on Boston–Seoul cost 0.9x more than budget airlines (USD 1982 vs USD 2112 median; overall median USD 2068).
- CX charges 7.1x more in ancillary fees than F9 — USD 71 vs USD 10 avg per booking.
- The same route priced USD 870 apart depending on where it was booked — the lowest median was USD 1257. 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 Boston to Seoul cost?
- Based on 277 offers analyzed, Boston to Seoul flights range from USD 1067 to USD 2664, with a median price of USD 2068. Search for your specific dates →
- What hidden fees should I expect on Boston to Seoul flights?
- On average, ancillary fees (bags, seat selection) add USD 38 to the base fare on Boston to Seoul flights. See itemized fees for your itinerary →
- Which airline is cheapest on Boston to Seoul including all fees?
- Porter Airlines has the lowest median fare on Boston to Seoul at USD 1197 (median across 2 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Boston–Seoul 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 USD 1257. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Boston to Seoul routes?
- Boston to Seoul has 17 airlines competing, creating a price range from USD 1067 to USD 2664 across 277 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
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