Keith Allen trades
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | cash | June 15, 1978 | 1978 tenth round pick (#167-Rick Berard) |  |
| Chicago Blackhawks acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | cash | June 15, 1978 | 1978 twelfth round pick (#195-Jim Olson) | |
| Colorado Rockies acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | 1978 2nd round pick (#27-Merlin Malinowski) | June 15, 1978 | 1979 2nd round pick (#22-Blake Wesley) | |
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | June 15, 1978 | 1978 eleventh round pick (#182-Mark Berge) | |
| Pittsburgh Penguins acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Tom Bladon | June 14, 1978 | 1978 1st round pick (#6-Behn Wilson) | |
| Orest Kindrachuk | future considerations (1978 8th round pick (#126-Jerry Price)) | |||
| Ross Lonsberry | ||||
| Philadelphia Flyers acquire | Date | New York Rangers acquire | ||
|---|---|---|---|---|
| 1978 1st round pick (#7-Ken Linseman) | June 2, 1978 | right to hire head coach Fred Shero |  |
| Detroit Red Wings acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | cash | November 1, 1977 | Terry Murray | |
| Minnesota North Stars acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Harvey Bennett Jr. | October 28, 1977 | Blake Dunlop | |
| 1978 3rd round pick (#37-Gord Salt) | ||||
| Colorado Rockies acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| Mark Suzor | August 5, 1977 | Barry Dean | |
| Los Angeles Kings acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Steve Short | June 17, 1977 | future considerations (Paul Evans) | |
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | June 14, 1977 | 1977 8th round pick (#136-Clint Eccles) | |
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | June 14, 1977 | 1977 eleventh round pick (#166-Barry Duench) | |
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | June 14, 1977 | 1977 9th round pick (#151-Michel Bauman) | |
| Buffalo Sabres acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | June 14, 1977 | 1977 tenth round pick (#159-Dave Isherwood) | |
| Detroit Red Wings acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| Steve Coates | February 17, 1977 | Mike Korney | |
| Dave Kelly | Rick Lapointe | |||
| Terry Murray | ||||
| Bob Ritchie | ||||
| Vancouver Canucks acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Larry Goodenough | January 20, 1977 | Bob Dailey | |
| Jack McIlhargey | ||||
| Washington Capitals acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
 | Bill Collins | December 4, 1976 | cash | |
| Washington Capitals acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| cash | November 24, 1976 | Harvey Bennett Jr. | |
| Los Angeles Kings acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| Dave Schultz | September 29, 1976 | 1977 4th round pick (#67-Yves Guillemette) | |
| 1978 2nd round pick (#27-Merlin Malinowski) | ||||
| Pittsburgh Penguins acquire | Date | Philadelphia Flyers acquire | ||
|---|---|---|---|---|
| Bobby Taylor | March 8, 1976 | Gary Inness | |
| Ed Van Impe | 1977 9th round pick (#150-Tom Bauer) | |||
| 1977 eleventh round pick (#165-Jim Trainor) | ||||
| 1977 tenth round pick (#158-Rob Nicholson) | ||||
| 1977 twelfth round pick (#172-Mike Laycock) | ||||
| future considerations (1977 8th round pick (#135-Pete Peeters)) | ||||