Route · MFR → SEA · 2020–2025 BTS data
Medford to Seattle
According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MFR to SEA (Medford to Seattle) ranks #1185 of 4927 tracked domestic routes by total flights (most flights = #1).
Data updated 2026-06-13
- 90.3%
- On-time
- +11.3 pts
- vs US avg
- 88 min
- Delay when late
- 9,868
- Flights
- #1185 of 4927
- Corpus placement
Cancelled
1.4%
Best Month
Sep 2025 99%
Worst Month
Jun 2024 82%
Distance
352 mi
Carriers
3
Monthly Performance
Recent 24 months of route data.
| Period | Flights | Delayed | Cancelled | Diverted | Carriers |
|---|---|---|---|---|---|
| Dec 2025 | 97 | 9 | 1 | 0 | OO |
| Nov 2025 | 99 | 9 | 6 | 0 | OO |
| Oct 2025 | 96 | 7 | 0 | 0 | OO |
| Sep 2025 | 90 | 1 | 0 | 0 | OO |
| Aug 2025 | 91 | 6 | 0 | 0 | OO |
| Jul 2025 | 92 | 7 | 0 | 0 | OO |
| Jun 2025 | 90 | 8 | 0 | 1 | OO |
| May 2025 | 93 | 2 | 0 | 0 | OO |
| Apr 2025 | 86 | 4 | 0 | 0 | OO |
| Mar 2025 | 88 | 1 | 0 | 0 | OO |
| Feb 2025 | 78 | 12 | 4 | 0 | OO |
| Jan 2025 | 84 | 11 | 9 | 1 | OO |
| Dec 2024 | 78 | 11 | 6 | 0 | OO |
| Nov 2024 | 77 | 8 | 0 | 0 | OO |
| Oct 2024 | 84 | 10 | 0 | 0 | OO |
| Sep 2024 | 80 | 14 | 0 | 0 | OO |
| Aug 2024 | 83 | 6 | 0 | 0 | OO |
| Jul 2024 | 85 | 9 | 0 | 0 | OO |
| Jun 2024 | 85 | 15 | 0 | 0 | OO |
| May 2024 | 88 | 11 | 1 | 0 | OO |
| Apr 2024 | 86 | 7 | 0 | 0 | OO |
| Mar 2024 | 88 | 5 | 0 | 0 | OO |
| Feb 2024 | 81 | 6 | 0 | 0 | OO |
| Jan 2024 | 81 | 13 | 2 | 0 | OO |
MFR–SEA seasonal on-time pattern
Best: August (93.7%) · weakest: December (83.4%)
Strongest calendar month
August
93.7% on-time · ~151 flights/mo
Busiest calendar month
March
~152 flights/mo avg
Weakest calendar month
December
83.4% on-time · ~121 flights/mo
Cancellation Rate
1.4%
29 of 2,080 flights
Diversion Rate
0.1%
2 of 2,080 flights
Explore origin & destination
On-time and delay data for the airports this route connects.
MFR - Medford
Full on-time, delay-cause, and seasonal performance for Medford, OR.
MFR on-time profileSEA - Seattle
Full on-time, delay-cause, and seasonal performance for Seattle, WA.
SEA on-time profileCompare the two airports
See MFR and SEA side by side on delays, cancellations, and reliability.
Compare MFR vs SEAOrigin-hub reliability standing
Among MFR's stronger departures
MFR → SEA posts a 90.3% on-time rate, landing in the ≥85% band with 6 of 7 BTS-tracked routes leaving Medford. The same hub also shows 1 mid-band and 0 challenged departures · fleet-wide on-time rank #125 of 4927 (highest on-time = #1).
Similar routes
Other BTS-tracked routes with comparable performance or trip length to MFR–SEA.
Routes with a similar on-time rate
What the Data Says About MFR to SEA
Medford to Seattle (MFR to SEA) is one of the more dependable pairings in the BTS On-Time Performance dataset: a 90.3% on-time rate across 9,868 flights, with delays that do happen averaging 87.6 minutes. The corridor runs roughly 352 miles and is served by 3 carriers. Over the most recent 24 months, 29 of 2,080 flights were cancelled (1.4%) and 2 diverted (0.1%).
The monthly split is wide on this route: Sep 2025 posted the strongest performance at 99% on-time, while Jun 2024 came in at just 82% - a 17-point swing worth factoring into travel timing.
On the multi-year calendar, MFR–SEA peaks in August at 93.7% on-time while March carries the heaviest traffic (~152 flights per month) ; the softest month is December at 83.4%, a 10.3-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.
Frequently Asked Questions
Where does MFR to SEA rank among US routes by traffic? ▼
How often are flights delayed from MFR to SEA? ▼
What is the cancellation rate for MFR to SEA? ▼
How far is the flight from MFR to SEA? ▼
When is the best time to fly from MFR to SEA? ▼
Airports on this route
Data source
Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.
Read our methodology - how this data is sourced, computed, and verified.
Using MFR–SEA data
MFR–SEA runs 11.3 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.
- Compare MFR and SEA airport profiles: delay causes and top routes differ even on the same corridor. MFR airport
- If your dates flex, August (93.7% on-time) beats December (83.4%) on this corridor. Seasonal chart
- 4 other routes post a similar 90.3% on-time rate; compare before you commit to this pairing. Similar routes
On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.
Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.