$148+ Cheap flights from Portland, ME to Knoxville (PWM - TYS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/19. Fares are subject to change and may not be available on all flights or dates of travel.
PWM — TYS
Apr 12 — Apr 191
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Last-minute
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Cheapest flights from Portland to KnoxvilleExplore the most affordable flight options available from Portland to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
Explore the most affordable flight options available from Portland to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 13, 2026.
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/511:35 am
PWM
- TYS
1 stop5h 14m
Delta
Wed 5/136:00 am
TYS
- PWM
1 stop4h 23m
Delta
Deal found 3/10![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:43 pm
PWM
- TYS
1 stop4h 37m
Delta
Tue 5/126:07 pm
TYS
- PWM
1 stop5h 11m
Delta
Deal found 3/8![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/63:55 pm
PWM
- TYS
1 stop4h 55m
Southwest
Wed 5/1312:50 pm
TYS
- PWM
2 stops9h 45m
Southwest
Deal found 3/10![Southwest logo]()
$300
This American Airlines deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
PWM
- TYS
2 stops6h 45m
American Airlines
Wed 5/136:00 am
TYS
- PWM
1 stop4h 07m
American Airlines
Deal found 3/8![American Airlines logo]()
$304
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/36:00 am
PWM
- TYS
1 stop5h 50m
Delta
Wed 5/66:00 am
TYS
- PWM
1 stop4h 52m
Delta
Deal found 3/10![Delta logo]()
$307
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:10 am
PWM
- TYS
2 stops11h 00m
Southwest
Sat 4/117:45 am
TYS
- PWM
1 stop4h 10m
Southwest
Deal found 3/8![Southwest logo]()
$312
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:18 pm
PWM
- TYS
1 stop28h 15m
Multiple Airlines
Thu 5/149:40 pm
TYS
- PWM
2 stops42h 36m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$314
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/25:40 am
PWM
- TYS
2 stops12h 50m
Southwest
Wed 5/1312:50 pm
TYS
- PWM
2 stops9h 45m
Southwest
Deal found 3/8![Southwest logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/49:47 am
PWM
- TYS
1 stop12h 37m
Multiple Airlines
Thu 5/149:40 pm
TYS
- PWM
2 stops42h 36m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$318
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/24:43 pm
PWM
- TYS
1 stop4h 37m
Delta
Sun 5/106:00 am
TYS
- PWM
1 stop4h 17m
Delta
Deal found 3/10![Delta logo]()
$319
Best flights from Portland to KnoxvilleDiscover carefully curated flight deals from Portland to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
Discover carefully curated flight deals from Portland to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated March 13, 2026.
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/41:35 pm
PWM
- TYS
1 stop4h 42m
Delta
Sat 9/126:10 am
TYS
- PWM
1 stop4h 51m
Delta
Deal found 3/8![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:10 am
PWM
- TYS
2 stops11h 00m
Southwest
Sat 4/116:40 am
TYS
- PWM
2 stops9h 20m
Southwest
Deal found 3/8![Southwest logo]()
$317
This American Airlines deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/45:48 am
PWM
- TYS
1 stop5h 00m
American Airlines
Mon 6/86:20 pm
TYS
- PWM
1 stop6h 15m
American Airlines
Deal found 3/7![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/44:28 pm
PWM
- TYS
1 stop6h 06m
United Airlines
Tue 4/77:00 am
TYS
- PWM
1 stop7h 20m
United Airlines
Deal found 3/10![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 3/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/33:55 pm
PWM
- TYS
1 stop4h 55m
Southwest
Sun 6/712:45 pm
TYS
- PWM
2 stops11h 20m
Southwest
Deal found 3/12![Southwest logo]()
$337
This Delta deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:45 am
PWM
- TYS
1 stop4h 27m
Delta
Sun 4/126:38 pm
TYS
- PWM
1 stop4h 44m
Delta
Deal found 3/7![Delta logo]()
$369
This United Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:28 pm
PWM
- TYS
1 stop6h 40m
United Airlines
Sat 4/112:25 pm
TYS
- PWM
1 stop4h 36m
United Airlines
Deal found 3/10![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/43:10 pm
PWM
- TYS
1 stop7h 10m
Southwest
Mon 6/812:35 pm
TYS
- PWM
2 stops11h 30m
Southwest
Deal found 3/7![Southwest logo]()
$358
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/711:45 am
PWM
- TYS
1 stop4h 27m
Delta
Fri 4/106:05 am
TYS
- PWM
1 stop4h 59m
Delta
Deal found 3/8![Delta logo]()
$369
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/246:03 am
PWM
- TYS
1 stop5h 09m
Delta
Fri 3/276:38 pm
TYS
- PWM
1 stop4h 44m
Delta
Deal found 3/9![Delta logo]()
$369
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/244:30 pm
PWM
- TYS
1 stop4h 40m
Southwest
Sat 3/287:50 am
TYS
- PWM
1 stop4h 40m
Southwest
Deal found 3/8![Southwest logo]()
$374
Last-minute flights from Portland to KnoxvilleDiscover last-minute flight deals from Portland to Knoxville. Data last updated March 13, 2026 and is based on user searches.
Discover last-minute flight deals from Portland to Knoxville. Data last updated March 13, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/226:19 pm
PWM
- TYS
1 stop13h 44m
Multiple Airlines
Fri 4/32:06 pm
TYS
- PWM
1 stop20h 11m
Multiple Airlines
Deal found 3/10![Multiple Airlines logo]()
$325
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/256:00 am
PWM
- TYS
1 stop5h 11m
American Airlines
Wed 4/16:05 am
TYS
- PWM
1 stop4h 23m
American Airlines
Deal found 3/10![American Airlines logo]()
$322
This Kiwi.com deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/26:19 pm
PWM
- TYS
1 stop19h 44m
Multiple Airlines
Sun 4/59:46 pm
TYS
- PWM
1 stop11h 21m
Multiple Airlines
Deal found 3/8![Multiple Airlines logo]()
$337
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/65:30 pm
PWM
- TYS
1 stop4h 40m
Southwest
Thu 4/98:05 am
TYS
- PWM
1 stop6h 05m
Southwest
Deal found 3/10![Southwest logo]()
$319
This Southwest deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/76:10 am
PWM
- TYS
2 stops11h 00m
Southwest
Sat 4/117:45 am
TYS
- PWM
1 stop4h 10m
Southwest
Deal found 3/8![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/75:23 am
PWM
- TYS
1 stop5h 54m
Delta
Tue 4/75:00 pm
TYS
- PWM
1 stop6h 12m
Delta
Deal found 3/10![Delta logo]()
$342
This Delta deal was found by Cheapflights users on 3/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/811:45 am
PWM
- TYS
1 stop4h 27m
Delta
Tue 4/1411:02 am
TYS
- PWM
1 stop4h 55m
Delta
Deal found 3/8![Delta logo]()
$324
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/276:00 am
PWM
- TYS
1 stop5h 50m
Delta
Wed 5/66:00 am
TYS
- PWM
1 stop4h 52m
Delta
Deal found 3/10![Delta logo]()
$307
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:43 pm
PWM
- TYS
1 stop4h 37m
Delta
Wed 5/66:00 am
TYS
- PWM
1 stop4h 52m
Delta
Deal found 3/10![Delta logo]()
$295
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/2911:42 am
PWM
- TYS
1 stop5h 07m
Delta
Wed 5/66:00 am
TYS
- PWM
1 stop4h 52m
Delta
Deal found 3/10![Delta logo]()
$332
One-way flights from Portland to KnoxvilleSearch for one-way flight options from Portland to Knoxville. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
Search for one-way flight options from Portland to Knoxville. Find affordable one-way fares based on user searches. Data last updated March 13, 2026.
This Delta deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/196:00 am
PWM
- TYS
1 stop5h 11m
Delta
Deal found 3/10![Delta logo]()
$148
This Delta deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/131:35 pm
PWM
- TYS
1 stop4h 42m
Delta
Deal found 3/9![Delta logo]()
$150
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/65:30 am
PWM
- TYS
2 stops11h 38m
United Airlines
Deal found 3/11![United Airlines logo]()
$153
This United Airlines deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/286:00 am
PWM
- TYS
2 stops8h 27m
United Airlines
Deal found 3/9![United Airlines logo]()
$165
This Southwest deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/104:50 pm
PWM
- TYS
1 stop4h 25m
Southwest
Deal found 3/10![Southwest logo]()
$179
This American Airlines deal was found by Cheapflights users on 3/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/193:39 pm
PWM
- TYS
2 stops7h 17m
American Airlines
Deal found 3/10![American Airlines logo]()
$180
This United Airlines deal was found by Cheapflights users on 3/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/195:30 am
PWM
- TYS
2 stops11h 38m
United Airlines
Deal found 3/11![United Airlines logo]()
$188
This Southwest deal was found by Cheapflights users on 3/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/92:50 pm
PWM
- TYS
1 stop6h 25m
Southwest
Deal found 3/9![Southwest logo]()
$200
This deal was found by Cheapflights users on 3/7. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/84:28 pm
PWM
- TYS
1 stop6h 40m
United Airlines
Deal found 3/7![United Airlines logo]()
$214
Find flight deals from Portland to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Portland (PWM) to Knoxville (TYS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated March 13, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $295 (Delta) |
One-way from | $148 (Delta) |
Popular in | December |
Cheapest in | January |
Average price | $421 |
Cheapflights Fare Finder
Customize your flight search to find flights from Portland to Knoxville that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 13, 2026.
Use the filters below to find and compare flights from Portland to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Fri 9/4
1:35 pm-6:17 pm
1 stop4h 42m
Knoxville McGhee Tyson
Sat 9/12
6:10 am-11:01 am
1 stop4h 51m
$299
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Tue 4/7
6:10 am-5:10 pm
2 stops11h 00m
Knoxville McGhee Tyson
Sat 4/11
6:40 am-4:00 pm
2 stops9h 20m
$317
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Thu 6/4
5:48 am-10:48 am
1 stop5h 00m
Knoxville McGhee Tyson
Mon 6/8
6:20 pm-12:35 am
1 stop6h 15m
$319
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Wed 6/3
3:55 pm-8:50 pm
1 stop4h 55m
Knoxville McGhee Tyson
Sun 6/7
12:45 pm-12:05 am
2 stops11h 20m
$337
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Thu 6/4
3:10 pm-10:20 pm
1 stop7h 10m
Knoxville McGhee Tyson
Mon 6/8
12:35 pm-12:05 am
2 stops11h 30m
$358
Quickest round-trip
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Wed 4/8
11:45 am-4:12 pm
1 stop4h 27m
Knoxville McGhee Tyson
Sun 4/12
6:38 pm-11:22 pm
1 stop4h 44m
$369
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Tue 4/7
11:45 am-4:12 pm
1 stop4h 27m
Knoxville McGhee Tyson
Fri 4/10
6:05 am-11:04 am
1 stop4h 59m
$369
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Tue 3/24
6:03 am-11:12 am
1 stop5h 09m
Knoxville McGhee Tyson
Fri 3/27
6:38 pm-11:22 pm
1 stop4h 44m
$369
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Tue 3/24
4:30 pm-9:10 pm
1 stop4h 40m
Knoxville McGhee Tyson
Sat 3/28
7:50 am-12:30 pm
1 stop4h 40m
$374
PortlandKnoxville
PWM - TYS
PWMTYS
Portland
Sat 4/4
4:28 pm-10:34 pm
1 stop6h 06m
Knoxville McGhee Tyson
Tue 4/7
7:00 am-2:20 pm
1 stop7h 20m
$377
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from Portland to Knoxville
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Portland to Knoxville in March.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Portland, Maine-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Portland, Maine-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Portland, Maine-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Portland, Maine-Knoxville flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Portland, Maine-Knoxville flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Portland to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Portland with our price prediction graph.
PWM-TYS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Portland to Knoxville
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Knoxville. Reviews last updated March 13, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited Airlines from Portland to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Boarding
8.1
Comfort
8.0
Crew
8.6
Entertainment
7.5
Food
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Mar 2026
KOA - HNL
Related info for your journey
Find useful and relevant information for your journey from Portland to Knoxville. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
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Morristown
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Alcoa
Murphy
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Top 4 airlines flying from Portland to Knoxville
Discover the top 4 airlines that operate flights from Portland to Knoxville. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 13, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$258 | Average$369 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$258 | Average$348 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$476 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$293 | Average$413 | FlexibilityNo cancel fee | On-time63% |