Raleigh-Durham International ⇄ Seattle-Tacoma International RDU–SEA
Airlines flew 1,810 flights between Raleigh-Durham International RDU in Raleigh/Durham, NC and Seattle-Tacoma International SEA in Seattle, WA in the twelve months to July 2026, both directions together: 263,372 passengers in 313,023 seats, 84% of them filled, and 202,636 pounds of freight. 2,354 miles, about 323 minutes in the air, on 3 airlines: Alaska Airlines Inc. (1,096), Delta Air Lines Inc. (713), United Air Lines Inc. (1). Planning to fly it yourself? The weather and winds along this route right now.
Flights by month both directions
By month, as a table
| flights | |
|---|---|
| 1/25 | 119 |
| 2/25 | 104 |
| 3/25 | 123 |
| 4/25 | 137 |
| 5/25 | 185 |
| 6/25 | 180 |
| 7/25 | 188 |
| 8/25 | 172 |
| 9/25 | 152 |
| 10/25 | 129 |
| 11/25 | 131 |
| 12/25 | 143 |
| 1/26 | 125 |
| 2/26 | 108 |
| 3/26 | 138 |
| 4/26 | 162 |
| 5/26 | 185 |
| 6/26 | 180 |
| 7/26 | 185 |
Passengers by month
By month, as a table
| passengers | |
|---|---|
| 1/25 | 16,179 |
| 2/25 | 13,494 |
| 3/25 | 17,469 |
| 4/25 | 20,254 |
| 5/25 | 28,214 |
| 6/25 | 28,576 |
| 7/25 | 30,705 |
| 8/25 | 28,012 |
| 9/25 | 21,938 |
| 10/25 | 17,803 |
| 11/25 | 17,253 |
| 12/25 | 20,991 |
| 1/26 | 15,745 |
| 2/26 | 13,953 |
| 3/26 | 19,998 |
| 4/26 | 22,365 |
| 5/26 | 26,861 |
| 6/26 | 28,423 |
| 7/26 | 30,030 |
The airlines twelve months, both directions
| Airline | Flights | Passengers | Seats filled | Service |
|---|---|---|---|---|
| Alaska Airlines Inc. AS | 1,096 | 165,438 | 86% | charter passenger service, scheduled passenger service |
| Delta Air Lines Inc. DL | 713 | 97,773 | 81% | scheduled passenger service |
| United Air Lines Inc. UA | 1 | 161 | 97% | scheduled passenger service |
The aircraft as the airlines report their types
| Aircraft | Flights | Seats a flight | Passengers |
|---|---|---|---|
| Boeing 737-900ER | 786 | 179 | 121,398 |
| Boeing 737-800 | 518 | 160 | 64,827 |
| Boeing B737 Max 900 | 481 | 178 | 73,493 |
| Boeing B737 Max 800 | 24 | 161 | 3,477 |
| Airbus Industrie A321-200n | 1 | 194 | 177 |
RDU → SEA this direction alone · flown January 2025 to July 2026
899 flights of 922 scheduled, 131,556 passengers in 155,522 seats, 60,263 pounds of freight. Alaska Airlines Inc. 544; Delta Air Lines Inc. 355.
SEA → RDU this direction alone · flown January 2025 to July 2026
911 flights of 922 scheduled, 131,816 passengers in 157,501 seats, 142,373 pounds of freight, 49 pounds of mail. Alaska Airlines Inc. 552; Delta Air Lines Inc. 358; United Air Lines Inc. 1.
Source: the Bureau of Transportation Statistics' T-100 Segment table (all carriers). A flight is one departure performed on this segment; seats and passengers are the airlines' own monthly reports; "seats filled" is passengers divided by seats. The miles are the DOT's great-circle distance. Both ends: Raleigh-Durham International RDU and Seattle-Tacoma International SEA; all routes.