Flights Portland → Knoxville/Maryville
As of October 2026, economy flights from Portland to Knoxville/Maryville have a typical range USD 626–1192, median USD 628. Full range across all 228 offers: USD 626–2653. We analyzed 228 offers from 7 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: Portland → Knoxville/Maryville
Based on 228 offers · October 2026. Prices and availability change — run a live search to confirm.
Bag & seat fees: Portland → Knoxville/Maryville
Add-on pricing from the cheapest available offer per airline · October 2026 · USD
| Airline | Carry-on | Checked bag | Seat selection |
|---|---|---|---|
| Southwest Airlines | Included | Included | — |
| United | Included | USD 35 | — |
| Delta | Included | USD 35 | — |
| American Airlines | Included | USD 35 | — |
| United | — | USD 100 | — |
| Southwest | — | USD 90 | — |
| American | — | USD 110 | — |
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 Portland to Knoxville/Maryville cost?
Based on 228 offers · October 2026
Portland to Knoxville/Maryville flights ranged from USD 626 to USD 2653 across 228 offers analyzed in October 2026. The chart below shows how prices distributed across all 228 offers.
These 228 offers (October 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 626 and USD 682
What hidden fees do Portland to Knoxville/Maryville flights charge?
Ancillary fees — bags, seat selection, and payment surcharges — can add 10–25% to the base fare on Portland to Knoxville/Maryville routes. The breakdown below is based on 228 offers analyzed in October 2026.
| Carrier | Avg fee (USD) | % of base fare |
|---|---|---|
| WN | 64 | 8% |
| UA | 45 | 7% |
| DL | 38 | 3% |
| AA | 46 | 7% |
| United | 100 | 16% |
| Southwest | 90 | 14% |
| American | 110 | 17% |
American: base ~USD 522 + fees USD 110 = ~USD 632 total. Delta Air Lines: base ~USD 970 + fees USD 38 = ~USD 1008 total.
American's USD 110 ancillary fees narrow the gap with Delta Air Lines's lower-fee model — the USD 448 base difference shrinks to USD 376 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.American charges 2.9x more in ancillary fees than DL on this route. Compare total-cost options when booking.
Run your search to see itemized fees for your itineraryWhich airline is cheapest from Portland to Knoxville/Maryville?
7 airlines flew Portland to Knoxville/Maryville 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 (American Airlines), fares ranged USD 626–638 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) |
|---|---|---|---|---|
 American Airlines | 102 | 626–638 | 626 | 46 (7%) |
 United | 1 | — | 627 | 100 (16%) |
 Southwest | 1 | — | 632 | 90 (14%) |
 American | 1 | — | 632 | 110 (17%) |
 United Airlines | 49 | 626–790 | 635 | 45 (7%) |
 Southwest Airlines | 24 | 632–998 | 902 | 64 (7%) |
 Delta Air Lines | 50 | 626–2158 | 1008 | 38 (4%) |
Where do the best Portland → Knoxville/Maryville 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: Portland to Knoxville/Maryville flights
- Full-service carriers on Portland–Knoxville/Maryville cost 0.9x more than budget airlines (USD 706 vs USD 767 median; overall median USD 628).
- American charges 2.9x more in ancillary fees than DL — USD 110 vs USD 38 avg per booking.
- The same route priced USD 711 apart depending on where it was booked — the lowest median was USD 626. 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 Portland to Knoxville/Maryville cost?
- Based on 228 offers analyzed, Portland to Knoxville/Maryville flights range from USD 626 to USD 2653, with a median price of USD 628. Search for your specific dates →
- What hidden fees should I expect on Portland to Knoxville/Maryville flights?
- On average, ancillary fees (bags, seat selection) add USD 46 to the base fare on Portland to Knoxville/Maryville flights. See itemized fees for your itinerary →
- Which airline is cheapest on Portland to Knoxville/Maryville including all fees?
- American Airlines has the lowest median fare on Portland to Knoxville/Maryville at USD 626 (median across 102 offers in our snapshot). Check which airline wins on your dates →
- Which booking site has the cheapest Portland–Knoxville/Maryville 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 626. Run a live search and we'll find the cheapest for you →
- Why do prices vary so much on Portland to Knoxville/Maryville routes?
- Portland to Knoxville/Maryville has 7 airlines competing, creating a price range from USD 626 to USD 2653 across 228 offers. Prices on this route change with booking timing, advance purchase, and ancillary add-ons. Find where your trip lands in the distribution →
7 airlines compete on this route — we check every one
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