- From August 27 to October 25, UA946/UA947 between Washington Dulles and Amsterdam will be operated by a former Continental 757 instead of typically operating United 2-class 767-300ER
- From March 30 to June 5, UA950/UA951 between Washington Dulles and Brussels will be operated by a former Continental 767-400ER instead of typically operating United 3-class 777-200ER
- United's summer operation reduces frequency on route between Washington Dulles and Frankfurt am Main from 3 daily in summer of 2012 to 2 daily effective March 31
- Effective starting March 31, UA922/UA923 operated by a United 767-300ER between Washington Dulles and London Heathrow will become UA004/UA005 and be operated by a former Continental 757
- Effective starting April 26, United introduces a 4th daily service between Washington Dulles and London Heathrow operated as UA130/131 with former Continental 757
- From March 31 to June 5 UA902/UA903 between Washington Dulles and Munich operated by a United 3-class 777-200ER will be replaced by a United 2-class 767-300ER. From June 6, it will be operated by a former Continental 767-400ER
- Effective March 31, UA966/UA967 between Washington Dulles and Rome Fiumicino a United 3-class 767-300ER replaces the 777-200ER currently operating, except from June 6 to August 26 when it will be operated by a former Continental 767-400ER
- From March 31 to August 26 UA936/UA937 between Washington Dulles and Zurich will be operated by United 2-class 767-300ER replaces former Continental 767-400ER
- From August 13 to August 27, UA145 to Honolulu will change flight numbers to UA523 and be operated by a United 3-class 777-200, replacing former Continental 767-400ER
United is also launching new services to North and Central America this summer:
- Starting May 1, UA6096 and UA6181/UA6152 will operate between Washington Dulles and Grand Rapids twice daily operated by an ERJ-145
- Starting April 13, UA1606/UA1658 will operate between Washington Dulles and Guatemala City once weekly on Saturdays to be operated by a 737-800
- Starting April 13, UA1180/UA1623 will operate between Washington Dulles and San Jose, Costa Rica once weekly on Saturdays to be operated by a 737-800
- United last operated this route from February 13 2004 to September 5 2005, initially operated daily service but later reduced to 3 weekly
- From June 8 to August 25, UA1686 will operate between Washington Dulles and Vancouver twice a week on Saturdays and Sundays
- United last operated this route from June 5 2006 to August 31 2008, with up to daily service
Other international airlines also have updates regarding Dulles for their summer schedules as well. International airlines have the following schedule changes for their summer service:
Saudia
- Starting March 31, service between Jeddah and Washington Dulles increases from 3 times to 4 times a week, flying as SV035/SV036 on Tuesdays, Fridays and Sundays and as SV033/SV034 on Thursdays. all four flights will be operated by a 777-200LR
Aeroflot
- From March 31 to May 30, service between Moscow Sheremetyevo and Washington Dulles increases from once a week on Thursdays to twice a week on Mondays and Thursdays. Afterward, service will increase again to three times a week on Mondays, Thursdays, and Saturdays. Boeing 767-300ER will continue to operate.
- Starting May 12, service between Frankfurt and Washington Dulles increases to daily from 5 times a week, flying as LH418/LH419 and operated by a 747-8I
- Starting June 10, service between Reykjavik and Washington Dulles increases from 6 times a week to daily
Thank you to RoutesOnline and AirlineRoute for providing the information in this post. Also, thank you to Boarding Area blog "Point me to the Plane" for information regarding the IAD to HNL change specifically.
